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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: | |
cb2f8277 | 29 | * Intel Linux Wireless <linuxwifi@intel.com> |
8ca151b5 JB |
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" | |
8ca151b5 JB |
70 | #include "fw-api-scan.h" |
71 | ||
a1ed4025 HD |
72 | #define IWL_DENSE_EBS_SCAN_RATIO 5 |
73 | #define IWL_SPARSE_EBS_SCAN_RATIO 1 | |
8a110d9b | 74 | |
9437e994 DS |
75 | enum iwl_mvm_traffic_load { |
76 | IWL_MVM_TRAFFIC_LOW, | |
77 | IWL_MVM_TRAFFIC_MEDIUM, | |
78 | IWL_MVM_TRAFFIC_HIGH, | |
79 | }; | |
80 | ||
81 | struct iwl_mvm_scan_timing_params { | |
82 | u32 dwell_active; | |
83 | u32 dwell_passive; | |
84 | u32 dwell_fragmented; | |
c3e230b1 | 85 | u32 dwell_extended; |
8a110d9b | 86 | u32 suspend_time; |
9437e994 DS |
87 | u32 max_out_time; |
88 | }; | |
89 | ||
90 | static struct iwl_mvm_scan_timing_params scan_timing[] = { | |
91 | [IWL_SCAN_TYPE_UNASSOC] = { | |
92 | .dwell_active = 10, | |
93 | .dwell_passive = 110, | |
94 | .dwell_fragmented = 44, | |
ca95ff3a | 95 | .dwell_extended = 90, |
9437e994 DS |
96 | .suspend_time = 0, |
97 | .max_out_time = 0, | |
98 | }, | |
99 | [IWL_SCAN_TYPE_WILD] = { | |
100 | .dwell_active = 10, | |
101 | .dwell_passive = 110, | |
102 | .dwell_fragmented = 44, | |
ca95ff3a | 103 | .dwell_extended = 90, |
9437e994 DS |
104 | .suspend_time = 30, |
105 | .max_out_time = 120, | |
106 | }, | |
107 | [IWL_SCAN_TYPE_MILD] = { | |
108 | .dwell_active = 10, | |
109 | .dwell_passive = 110, | |
110 | .dwell_fragmented = 44, | |
ca95ff3a | 111 | .dwell_extended = 90, |
9437e994 DS |
112 | .suspend_time = 120, |
113 | .max_out_time = 120, | |
114 | }, | |
115 | [IWL_SCAN_TYPE_FRAGMENTED] = { | |
116 | .dwell_active = 10, | |
117 | .dwell_passive = 110, | |
118 | .dwell_fragmented = 44, | |
119 | .suspend_time = 95, | |
120 | .max_out_time = 44, | |
121 | }, | |
122 | }; | |
123 | ||
124 | struct iwl_mvm_scan_params { | |
125 | enum iwl_mvm_scan_type type; | |
f7b788b4 | 126 | u32 n_channels; |
283c2491 | 127 | u16 delay; |
f7b788b4 LC |
128 | int n_ssids; |
129 | struct cfg80211_ssid *ssids; | |
130 | struct ieee80211_channel **channels; | |
f7b788b4 LC |
131 | u32 flags; |
132 | u8 *mac_addr; | |
133 | u8 *mac_addr_mask; | |
134 | bool no_cck; | |
135 | bool pass_all; | |
136 | int n_match_sets; | |
45d1b12e | 137 | struct iwl_scan_probe_req preq; |
f7b788b4 | 138 | struct cfg80211_match_set *match_sets; |
cd55ccea AS |
139 | int n_scan_plans; |
140 | struct cfg80211_sched_scan_plan *scan_plans; | |
8a110d9b | 141 | }; |
8ca151b5 | 142 | |
d2496221 DS |
143 | static u8 iwl_mvm_scan_rx_ant(struct iwl_mvm *mvm) |
144 | { | |
145 | if (mvm->scan_rx_ant != ANT_NONE) | |
146 | return mvm->scan_rx_ant; | |
a0544272 | 147 | return iwl_mvm_get_valid_rx_ant(mvm); |
d2496221 DS |
148 | } |
149 | ||
8ca151b5 JB |
150 | static inline __le16 iwl_mvm_scan_rx_chain(struct iwl_mvm *mvm) |
151 | { | |
152 | u16 rx_chain; | |
91b05d10 | 153 | u8 rx_ant; |
8ca151b5 | 154 | |
d2496221 | 155 | rx_ant = iwl_mvm_scan_rx_ant(mvm); |
8ca151b5 JB |
156 | rx_chain = rx_ant << PHY_RX_CHAIN_VALID_POS; |
157 | rx_chain |= rx_ant << PHY_RX_CHAIN_FORCE_MIMO_SEL_POS; | |
158 | rx_chain |= rx_ant << PHY_RX_CHAIN_FORCE_SEL_POS; | |
159 | rx_chain |= 0x1 << PHY_RX_CHAIN_DRIVER_FORCE_POS; | |
160 | return cpu_to_le16(rx_chain); | |
161 | } | |
162 | ||
fb98be5e | 163 | static __le32 iwl_mvm_scan_rxon_flags(enum ieee80211_band band) |
8ca151b5 | 164 | { |
fb98be5e | 165 | if (band == IEEE80211_BAND_2GHZ) |
8ca151b5 JB |
166 | return cpu_to_le32(PHY_BAND_24); |
167 | else | |
168 | return cpu_to_le32(PHY_BAND_5); | |
169 | } | |
170 | ||
171 | static inline __le32 | |
172 | iwl_mvm_scan_rate_n_flags(struct iwl_mvm *mvm, enum ieee80211_band band, | |
173 | bool no_cck) | |
174 | { | |
175 | u32 tx_ant; | |
176 | ||
177 | mvm->scan_last_antenna_idx = | |
a0544272 | 178 | iwl_mvm_next_antenna(mvm, iwl_mvm_get_valid_tx_ant(mvm), |
8ca151b5 JB |
179 | mvm->scan_last_antenna_idx); |
180 | tx_ant = BIT(mvm->scan_last_antenna_idx) << RATE_MCS_ANT_POS; | |
181 | ||
182 | if (band == IEEE80211_BAND_2GHZ && !no_cck) | |
183 | return cpu_to_le32(IWL_RATE_1M_PLCP | RATE_MCS_CCK_MSK | | |
184 | tx_ant); | |
185 | else | |
186 | return cpu_to_le32(IWL_RATE_6M_PLCP | tx_ant); | |
187 | } | |
188 | ||
8a110d9b AB |
189 | static void iwl_mvm_scan_condition_iterator(void *data, u8 *mac, |
190 | struct ieee80211_vif *vif) | |
61f6325d | 191 | { |
8a110d9b | 192 | struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif); |
c3f8d0a3 | 193 | int *global_cnt = data; |
61f6325d | 194 | |
1e2ebe0e DS |
195 | if (vif->type != NL80211_IFTYPE_P2P_DEVICE && mvmvif->phy_ctxt && |
196 | mvmvif->phy_ctxt->id < MAX_PHYS) | |
c3f8d0a3 | 197 | *global_cnt += 1; |
8a110d9b AB |
198 | } |
199 | ||
9437e994 DS |
200 | static enum iwl_mvm_traffic_load iwl_mvm_get_traffic_load(struct iwl_mvm *mvm) |
201 | { | |
202 | return IWL_MVM_TRAFFIC_LOW; | |
203 | } | |
204 | ||
205 | static enum | |
355346ba | 206 | iwl_mvm_scan_type iwl_mvm_get_scan_type(struct iwl_mvm *mvm, bool p2p_device) |
8a110d9b | 207 | { |
c3f8d0a3 | 208 | int global_cnt = 0; |
9437e994 DS |
209 | enum iwl_mvm_traffic_load load; |
210 | bool low_latency; | |
8a110d9b AB |
211 | |
212 | ieee80211_iterate_active_interfaces_atomic(mvm->hw, | |
213 | IEEE80211_IFACE_ITER_NORMAL, | |
214 | iwl_mvm_scan_condition_iterator, | |
c3f8d0a3 | 215 | &global_cnt); |
c3f8d0a3 | 216 | if (!global_cnt) |
9437e994 | 217 | return IWL_SCAN_TYPE_UNASSOC; |
ef67f18d | 218 | |
9437e994 DS |
219 | load = iwl_mvm_get_traffic_load(mvm); |
220 | low_latency = iwl_mvm_low_latency(mvm); | |
6bcb00f6 | 221 | |
355346ba | 222 | if ((load == IWL_MVM_TRAFFIC_HIGH || low_latency) && !p2p_device && |
9437e994 DS |
223 | fw_has_api(&mvm->fw->ucode_capa, IWL_UCODE_TLV_API_FRAGMENTED_SCAN)) |
224 | return IWL_SCAN_TYPE_FRAGMENTED; | |
190f1029 | 225 | |
9437e994 DS |
226 | if (load >= IWL_MVM_TRAFFIC_MEDIUM || low_latency) |
227 | return IWL_SCAN_TYPE_MILD; | |
0616c62c | 228 | |
9437e994 | 229 | return IWL_SCAN_TYPE_WILD; |
61f6325d HD |
230 | } |
231 | ||
73897bd1 AO |
232 | static inline bool iwl_mvm_rrm_scan_needed(struct iwl_mvm *mvm) |
233 | { | |
234 | /* require rrm scan whenever the fw supports it */ | |
859d914c JB |
235 | return fw_has_capa(&mvm->fw->ucode_capa, |
236 | IWL_UCODE_TLV_CAPA_DS_PARAM_SET_IE_SUPPORT); | |
73897bd1 AO |
237 | } |
238 | ||
999d2568 | 239 | static int iwl_mvm_max_scan_ie_fw_cmd_room(struct iwl_mvm *mvm) |
48849a41 AO |
240 | { |
241 | int max_probe_len; | |
242 | ||
1f940386 | 243 | max_probe_len = SCAN_OFFLOAD_PROBE_REQ_SIZE; |
48849a41 AO |
244 | |
245 | /* we create the 802.11 header and SSID element */ | |
246 | max_probe_len -= 24 + 2; | |
247 | ||
66dc5272 AO |
248 | /* DS parameter set element is added on 2.4GHZ band if required */ |
249 | if (iwl_mvm_rrm_scan_needed(mvm)) | |
250 | max_probe_len -= 3; | |
251 | ||
48849a41 AO |
252 | return max_probe_len; |
253 | } | |
254 | ||
999d2568 | 255 | int iwl_mvm_max_scan_ie_len(struct iwl_mvm *mvm) |
48849a41 | 256 | { |
999d2568 | 257 | int max_ie_len = iwl_mvm_max_scan_ie_fw_cmd_room(mvm); |
48849a41 | 258 | |
48849a41 AO |
259 | /* TODO: [BUG] This function should return the maximum allowed size of |
260 | * scan IEs, however the LMAC scan api contains both 2GHZ and 5GHZ IEs | |
261 | * in the same command. So the correct implementation of this function | |
262 | * is just iwl_mvm_max_scan_ie_fw_cmd_room() / 2. Currently the scan | |
263 | * command has only 512 bytes and it would leave us with about 240 | |
264 | * bytes for scan IEs, which is clearly not enough. So meanwhile | |
265 | * we will report an incorrect value. This may result in a failure to | |
266 | * issue a scan in unified_scan_lmac and unified_sched_scan_lmac | |
267 | * functions with -ENOBUFS, if a large enough probe will be provided. | |
268 | */ | |
269 | return max_ie_len; | |
270 | } | |
271 | ||
1fa1bcc0 AS |
272 | static u8 *iwl_mvm_dump_channel_list(struct iwl_scan_results_notif *res, |
273 | int num_res, u8 *buf, size_t buf_size) | |
274 | { | |
275 | int i; | |
276 | u8 *pos = buf, *end = buf + buf_size; | |
277 | ||
278 | for (i = 0; pos < end && i < num_res; i++) | |
279 | pos += snprintf(pos, end - pos, " %u", res[i].channel); | |
280 | ||
281 | /* terminate the string in case the buffer was too short */ | |
282 | *(buf + buf_size - 1) = '\0'; | |
283 | ||
284 | return buf; | |
285 | } | |
286 | ||
0416841d JB |
287 | void iwl_mvm_rx_lmac_scan_iter_complete_notif(struct iwl_mvm *mvm, |
288 | struct iwl_rx_cmd_buffer *rxb) | |
e5d74646 AB |
289 | { |
290 | struct iwl_rx_packet *pkt = rxb_addr(rxb); | |
1083fd73 | 291 | struct iwl_lmac_scan_complete_notif *notif = (void *)pkt->data; |
1fa1bcc0 | 292 | u8 buf[256]; |
e5d74646 AB |
293 | |
294 | IWL_DEBUG_SCAN(mvm, | |
1fa1bcc0 AS |
295 | "Scan offload iteration complete: status=0x%x scanned channels=%d channels list: %s\n", |
296 | notif->status, notif->scanned_channels, | |
297 | iwl_mvm_dump_channel_list(notif->results, | |
298 | notif->scanned_channels, buf, | |
299 | sizeof(buf))); | |
e5d74646 AB |
300 | } |
301 | ||
0416841d JB |
302 | void iwl_mvm_rx_scan_match_found(struct iwl_mvm *mvm, |
303 | struct iwl_rx_cmd_buffer *rxb) | |
35a000b7 | 304 | { |
d2496221 DS |
305 | IWL_DEBUG_SCAN(mvm, "Scheduled scan results\n"); |
306 | ieee80211_sched_scan_results(mvm->hw); | |
35a000b7 DS |
307 | } |
308 | ||
f0bf8593 DS |
309 | static const char *iwl_mvm_ebs_status_str(enum iwl_scan_ebs_status status) |
310 | { | |
311 | switch (status) { | |
312 | case IWL_SCAN_EBS_SUCCESS: | |
313 | return "successful"; | |
314 | case IWL_SCAN_EBS_INACTIVE: | |
315 | return "inactive"; | |
316 | case IWL_SCAN_EBS_FAILED: | |
317 | case IWL_SCAN_EBS_CHAN_NOT_FOUND: | |
318 | default: | |
319 | return "failed"; | |
320 | } | |
321 | } | |
322 | ||
0416841d JB |
323 | void iwl_mvm_rx_lmac_scan_complete_notif(struct iwl_mvm *mvm, |
324 | struct iwl_rx_cmd_buffer *rxb) | |
35a000b7 DS |
325 | { |
326 | struct iwl_rx_packet *pkt = rxb_addr(rxb); | |
9af91f46 LC |
327 | struct iwl_periodic_scan_complete *scan_notif = (void *)pkt->data; |
328 | bool aborted = (scan_notif->status == IWL_SCAN_OFFLOAD_ABORTED); | |
fb98be5e | 329 | |
72a33568 LC |
330 | /* If this happens, the firmware has mistakenly sent an LMAC |
331 | * notification during UMAC scans -- warn and ignore it. | |
332 | */ | |
333 | if (WARN_ON_ONCE(fw_has_capa(&mvm->fw->ucode_capa, | |
334 | IWL_UCODE_TLV_CAPA_UMAC_SCAN))) | |
335 | return; | |
336 | ||
a6623e84 JB |
337 | /* scan status must be locked for proper checking */ |
338 | lockdep_assert_held(&mvm->mutex); | |
339 | ||
9af91f46 LC |
340 | /* We first check if we were stopping a scan, in which case we |
341 | * just clear the stopping flag. Then we check if it was a | |
342 | * firmware initiated stop, in which case we need to inform | |
343 | * mac80211. | |
344 | * Note that we can have a stopping and a running scan | |
345 | * simultaneously, but we can't have two different types of | |
346 | * scans stopping or running at the same time (since LMAC | |
347 | * doesn't support it). | |
348 | */ | |
349 | ||
350 | if (mvm->scan_status & IWL_MVM_SCAN_STOPPING_SCHED) { | |
351 | WARN_ON_ONCE(mvm->scan_status & IWL_MVM_SCAN_STOPPING_REGULAR); | |
352 | ||
a7b3bc91 | 353 | IWL_DEBUG_SCAN(mvm, "Scheduled scan %s, EBS status %s\n", |
9af91f46 | 354 | aborted ? "aborted" : "completed", |
a7b3bc91 AB |
355 | iwl_mvm_ebs_status_str(scan_notif->ebs_status)); |
356 | IWL_DEBUG_SCAN(mvm, | |
357 | "Last line %d, Last iteration %d, Time after last iteration %d\n", | |
1a84e771 AB |
358 | scan_notif->last_schedule_line, |
359 | scan_notif->last_schedule_iteration, | |
360 | __le32_to_cpu(scan_notif->time_after_last_iter)); | |
e820c2da | 361 | |
9af91f46 LC |
362 | mvm->scan_status &= ~IWL_MVM_SCAN_STOPPING_SCHED; |
363 | } else if (mvm->scan_status & IWL_MVM_SCAN_STOPPING_REGULAR) { | |
364 | IWL_DEBUG_SCAN(mvm, "Regular scan %s, EBS status %s\n", | |
365 | aborted ? "aborted" : "completed", | |
f0bf8593 | 366 | iwl_mvm_ebs_status_str(scan_notif->ebs_status)); |
35a000b7 | 367 | |
9af91f46 LC |
368 | mvm->scan_status &= ~IWL_MVM_SCAN_STOPPING_REGULAR; |
369 | } else if (mvm->scan_status & IWL_MVM_SCAN_SCHED) { | |
370 | WARN_ON_ONCE(mvm->scan_status & IWL_MVM_SCAN_REGULAR); | |
371 | ||
a7b3bc91 | 372 | IWL_DEBUG_SCAN(mvm, "Scheduled scan %s, EBS status %s\n", |
9af91f46 | 373 | aborted ? "aborted" : "completed", |
a7b3bc91 AB |
374 | iwl_mvm_ebs_status_str(scan_notif->ebs_status)); |
375 | IWL_DEBUG_SCAN(mvm, | |
376 | "Last line %d, Last iteration %d, Time after last iteration %d (FW)\n", | |
1a84e771 AB |
377 | scan_notif->last_schedule_line, |
378 | scan_notif->last_schedule_iteration, | |
379 | __le32_to_cpu(scan_notif->time_after_last_iter)); | |
9af91f46 LC |
380 | |
381 | mvm->scan_status &= ~IWL_MVM_SCAN_SCHED; | |
33ea27f6 | 382 | ieee80211_sched_scan_stopped(mvm->hw); |
9af91f46 LC |
383 | } else if (mvm->scan_status & IWL_MVM_SCAN_REGULAR) { |
384 | IWL_DEBUG_SCAN(mvm, "Regular scan %s, EBS status %s (FW)\n", | |
385 | aborted ? "aborted" : "completed", | |
f0bf8593 | 386 | iwl_mvm_ebs_status_str(scan_notif->ebs_status)); |
9af91f46 LC |
387 | |
388 | mvm->scan_status &= ~IWL_MVM_SCAN_REGULAR; | |
fb98be5e | 389 | ieee80211_scan_completed(mvm->hw, |
1f940386 | 390 | scan_notif->status == IWL_SCAN_OFFLOAD_ABORTED); |
4ff78181 | 391 | iwl_mvm_unref(mvm, IWL_MVM_REF_SCAN); |
33ea27f6 | 392 | } |
35a000b7 | 393 | |
f0bf8593 DS |
394 | mvm->last_ebs_successful = |
395 | scan_notif->ebs_status == IWL_SCAN_EBS_SUCCESS || | |
396 | scan_notif->ebs_status == IWL_SCAN_EBS_INACTIVE; | |
35a000b7 DS |
397 | } |
398 | ||
35a000b7 DS |
399 | static int iwl_ssid_exist(u8 *ssid, u8 ssid_len, struct iwl_ssid_ie *ssid_list) |
400 | { | |
401 | int i; | |
402 | ||
403 | for (i = 0; i < PROBE_OPTION_MAX; i++) { | |
404 | if (!ssid_list[i].len) | |
405 | break; | |
406 | if (ssid_list[i].len == ssid_len && | |
407 | !memcmp(ssid_list->ssid, ssid, ssid_len)) | |
408 | return i; | |
409 | } | |
410 | return -1; | |
411 | } | |
412 | ||
e2ec4f6d LC |
413 | /* We insert the SSIDs in an inverted order, because the FW will |
414 | * invert it back. | |
415 | */ | |
416 | static void iwl_scan_build_ssids(struct iwl_mvm_scan_params *params, | |
417 | struct iwl_ssid_ie *ssids, | |
418 | u32 *ssid_bitmap) | |
35a000b7 DS |
419 | { |
420 | int i, j; | |
421 | int index; | |
422 | ||
423 | /* | |
424 | * copy SSIDs from match list. | |
425 | * iwl_config_sched_scan_profiles() uses the order of these ssids to | |
426 | * config match list. | |
427 | */ | |
1c1b5b26 LC |
428 | for (i = 0, j = params->n_match_sets - 1; |
429 | j >= 0 && i < PROBE_OPTION_MAX; | |
430 | i++, j--) { | |
ea73cbce | 431 | /* skip empty SSID matchsets */ |
1c1b5b26 | 432 | if (!params->match_sets[j].ssid.ssid_len) |
ea73cbce | 433 | continue; |
e2ec4f6d LC |
434 | ssids[i].id = WLAN_EID_SSID; |
435 | ssids[i].len = params->match_sets[j].ssid.ssid_len; | |
436 | memcpy(ssids[i].ssid, params->match_sets[j].ssid.ssid, | |
437 | ssids[i].len); | |
35a000b7 DS |
438 | } |
439 | ||
440 | /* add SSIDs from scan SSID list */ | |
441 | *ssid_bitmap = 0; | |
1c1b5b26 LC |
442 | for (j = params->n_ssids - 1; |
443 | j >= 0 && i < PROBE_OPTION_MAX; | |
444 | i++, j--) { | |
f7b788b4 LC |
445 | index = iwl_ssid_exist(params->ssids[j].ssid, |
446 | params->ssids[j].ssid_len, | |
e2ec4f6d | 447 | ssids); |
35a000b7 | 448 | if (index < 0) { |
e2ec4f6d LC |
449 | ssids[i].id = WLAN_EID_SSID; |
450 | ssids[i].len = params->ssids[j].ssid_len; | |
451 | memcpy(ssids[i].ssid, params->ssids[j].ssid, | |
452 | ssids[i].len); | |
453 | *ssid_bitmap |= BIT(i); | |
35a000b7 | 454 | } else { |
e2ec4f6d | 455 | *ssid_bitmap |= BIT(index); |
35a000b7 DS |
456 | } |
457 | } | |
458 | } | |
459 | ||
416c9b50 LC |
460 | static int |
461 | iwl_mvm_config_sched_scan_profiles(struct iwl_mvm *mvm, | |
462 | struct cfg80211_sched_scan_request *req) | |
35a000b7 DS |
463 | { |
464 | struct iwl_scan_offload_profile *profile; | |
465 | struct iwl_scan_offload_profile_cfg *profile_cfg; | |
466 | struct iwl_scan_offload_blacklist *blacklist; | |
467 | struct iwl_host_cmd cmd = { | |
468 | .id = SCAN_OFFLOAD_UPDATE_PROFILES_CMD, | |
35a000b7 DS |
469 | .len[1] = sizeof(*profile_cfg), |
470 | .dataflags[0] = IWL_HCMD_DFL_NOCOPY, | |
471 | .dataflags[1] = IWL_HCMD_DFL_NOCOPY, | |
472 | }; | |
473 | int blacklist_len; | |
474 | int i; | |
475 | int ret; | |
476 | ||
477 | if (WARN_ON(req->n_match_sets > IWL_SCAN_MAX_PROFILES)) | |
46eebec9 | 478 | return -EIO; |
35a000b7 DS |
479 | |
480 | if (mvm->fw->ucode_capa.flags & IWL_UCODE_TLV_FLAGS_SHORT_BL) | |
481 | blacklist_len = IWL_SCAN_SHORT_BLACKLIST_LEN; | |
482 | else | |
483 | blacklist_len = IWL_SCAN_MAX_BLACKLIST_LEN; | |
484 | ||
485 | blacklist = kzalloc(sizeof(*blacklist) * blacklist_len, GFP_KERNEL); | |
486 | if (!blacklist) | |
487 | return -ENOMEM; | |
488 | ||
489 | profile_cfg = kzalloc(sizeof(*profile_cfg), GFP_KERNEL); | |
490 | if (!profile_cfg) { | |
491 | ret = -ENOMEM; | |
492 | goto free_blacklist; | |
493 | } | |
494 | ||
495 | cmd.data[0] = blacklist; | |
496 | cmd.len[0] = sizeof(*blacklist) * blacklist_len; | |
497 | cmd.data[1] = profile_cfg; | |
498 | ||
499 | /* No blacklist configuration */ | |
500 | ||
501 | profile_cfg->num_profiles = req->n_match_sets; | |
502 | profile_cfg->active_clients = SCAN_CLIENT_SCHED_SCAN; | |
503 | profile_cfg->pass_match = SCAN_CLIENT_SCHED_SCAN; | |
504 | profile_cfg->match_notify = SCAN_CLIENT_SCHED_SCAN; | |
6e0bbe5e DS |
505 | if (!req->n_match_sets || !req->match_sets[0].ssid.ssid_len) |
506 | profile_cfg->any_beacon_notify = SCAN_CLIENT_SCHED_SCAN; | |
35a000b7 DS |
507 | |
508 | for (i = 0; i < req->n_match_sets; i++) { | |
509 | profile = &profile_cfg->profiles[i]; | |
510 | profile->ssid_index = i; | |
511 | /* Support any cipher and auth algorithm */ | |
512 | profile->unicast_cipher = 0xff; | |
513 | profile->auth_alg = 0xff; | |
514 | profile->network_type = IWL_NETWORK_TYPE_ANY; | |
515 | profile->band_selection = IWL_SCAN_OFFLOAD_SELECT_ANY; | |
516 | profile->client_bitmap = SCAN_CLIENT_SCHED_SCAN; | |
517 | } | |
518 | ||
519 | IWL_DEBUG_SCAN(mvm, "Sending scheduled scan profile config\n"); | |
520 | ||
521 | ret = iwl_mvm_send_cmd(mvm, &cmd); | |
522 | kfree(profile_cfg); | |
523 | free_blacklist: | |
524 | kfree(blacklist); | |
525 | ||
526 | return ret; | |
527 | } | |
528 | ||
d2496221 DS |
529 | static bool iwl_mvm_scan_pass_all(struct iwl_mvm *mvm, |
530 | struct cfg80211_sched_scan_request *req) | |
531 | { | |
532 | if (req->n_match_sets && req->match_sets[0].ssid.ssid_len) { | |
533 | IWL_DEBUG_SCAN(mvm, | |
534 | "Sending scheduled scan with filtering, n_match_sets %d\n", | |
535 | req->n_match_sets); | |
536 | return false; | |
537 | } | |
538 | ||
539 | IWL_DEBUG_SCAN(mvm, "Sending Scheduled scan without filtering\n"); | |
540 | return true; | |
541 | } | |
542 | ||
f2461796 | 543 | static int iwl_mvm_lmac_scan_abort(struct iwl_mvm *mvm) |
35a000b7 DS |
544 | { |
545 | int ret; | |
546 | struct iwl_host_cmd cmd = { | |
547 | .id = SCAN_OFFLOAD_ABORT_CMD, | |
35a000b7 DS |
548 | }; |
549 | u32 status; | |
550 | ||
35a000b7 DS |
551 | ret = iwl_mvm_send_cmd_status(mvm, &cmd, &status); |
552 | if (ret) | |
553 | return ret; | |
554 | ||
555 | if (status != CAN_ABORT_STATUS) { | |
556 | /* | |
557 | * The scan abort will return 1 for success or | |
558 | * 2 for "failure". A failure condition can be | |
559 | * due to simply not being in an active scan which | |
560 | * can occur if we send the scan abort before the | |
561 | * microcode has notified us that a scan is completed. | |
562 | */ | |
563 | IWL_DEBUG_SCAN(mvm, "SCAN OFFLOAD ABORT ret %d.\n", status); | |
33ea27f6 | 564 | ret = -ENOENT; |
35a000b7 DS |
565 | } |
566 | ||
567 | return ret; | |
568 | } | |
569 | ||
65ff556b LC |
570 | static void iwl_mvm_scan_fill_tx_cmd(struct iwl_mvm *mvm, |
571 | struct iwl_scan_req_tx_cmd *tx_cmd, | |
572 | bool no_cck) | |
fb98be5e DS |
573 | { |
574 | tx_cmd[0].tx_flags = cpu_to_le32(TX_CMD_FLG_SEQ_CTL | | |
575 | TX_CMD_FLG_BT_DIS); | |
576 | tx_cmd[0].rate_n_flags = iwl_mvm_scan_rate_n_flags(mvm, | |
577 | IEEE80211_BAND_2GHZ, | |
578 | no_cck); | |
579 | tx_cmd[0].sta_id = mvm->aux_sta.sta_id; | |
580 | ||
581 | tx_cmd[1].tx_flags = cpu_to_le32(TX_CMD_FLG_SEQ_CTL | | |
582 | TX_CMD_FLG_BT_DIS); | |
583 | tx_cmd[1].rate_n_flags = iwl_mvm_scan_rate_n_flags(mvm, | |
584 | IEEE80211_BAND_5GHZ, | |
585 | no_cck); | |
586 | tx_cmd[1].sta_id = mvm->aux_sta.sta_id; | |
587 | } | |
588 | ||
589 | static void | |
590 | iwl_mvm_lmac_scan_cfg_channels(struct iwl_mvm *mvm, | |
591 | struct ieee80211_channel **channels, | |
592 | int n_channels, u32 ssid_bitmap, | |
65ff556b | 593 | struct iwl_scan_req_lmac *cmd) |
fb98be5e DS |
594 | { |
595 | struct iwl_scan_channel_cfg_lmac *channel_cfg = (void *)&cmd->data; | |
596 | int i; | |
597 | ||
598 | for (i = 0; i < n_channels; i++) { | |
599 | channel_cfg[i].channel_num = | |
600 | cpu_to_le16(channels[i]->hw_value); | |
601 | channel_cfg[i].iter_count = cpu_to_le16(1); | |
602 | channel_cfg[i].iter_interval = 0; | |
603 | channel_cfg[i].flags = | |
604 | cpu_to_le32(IWL_UNIFIED_SCAN_CHANNEL_PARTIAL | | |
605 | ssid_bitmap); | |
606 | } | |
607 | } | |
608 | ||
66dc5272 AO |
609 | static u8 *iwl_mvm_copy_and_insert_ds_elem(struct iwl_mvm *mvm, const u8 *ies, |
610 | size_t len, u8 *const pos) | |
611 | { | |
612 | static const u8 before_ds_params[] = { | |
613 | WLAN_EID_SSID, | |
614 | WLAN_EID_SUPP_RATES, | |
615 | WLAN_EID_REQUEST, | |
616 | WLAN_EID_EXT_SUPP_RATES, | |
617 | }; | |
618 | size_t offs; | |
619 | u8 *newpos = pos; | |
620 | ||
621 | if (!iwl_mvm_rrm_scan_needed(mvm)) { | |
622 | memcpy(newpos, ies, len); | |
623 | return newpos + len; | |
624 | } | |
625 | ||
626 | offs = ieee80211_ie_split(ies, len, | |
627 | before_ds_params, | |
628 | ARRAY_SIZE(before_ds_params), | |
629 | 0); | |
630 | ||
631 | memcpy(newpos, ies, offs); | |
632 | newpos += offs; | |
633 | ||
634 | /* Add a placeholder for DS Parameter Set element */ | |
635 | *newpos++ = WLAN_EID_DS_PARAMS; | |
636 | *newpos++ = 1; | |
637 | *newpos++ = 0; | |
638 | ||
639 | memcpy(newpos, ies + offs, len - offs); | |
640 | newpos += len - offs; | |
641 | ||
642 | return newpos; | |
643 | } | |
644 | ||
fb98be5e | 645 | static void |
65ff556b LC |
646 | iwl_mvm_build_scan_probe(struct iwl_mvm *mvm, struct ieee80211_vif *vif, |
647 | struct ieee80211_scan_ies *ies, | |
45d1b12e | 648 | struct iwl_mvm_scan_params *params) |
fb98be5e | 649 | { |
45d1b12e | 650 | struct ieee80211_mgmt *frame = (void *)params->preq.buf; |
66dc5272 | 651 | u8 *pos, *newpos; |
45d1b12e LC |
652 | const u8 *mac_addr = params->flags & NL80211_SCAN_FLAG_RANDOM_ADDR ? |
653 | params->mac_addr : NULL; | |
fb98be5e | 654 | |
effd05ac JB |
655 | /* |
656 | * Unfortunately, right now the offload scan doesn't support randomising | |
657 | * within the firmware, so until the firmware API is ready we implement | |
658 | * it in the driver. This means that the scan iterations won't really be | |
659 | * random, only when it's restarted, but at least that helps a bit. | |
660 | */ | |
661 | if (mac_addr) | |
45d1b12e LC |
662 | get_random_mask_addr(frame->sa, mac_addr, |
663 | params->mac_addr_mask); | |
effd05ac JB |
664 | else |
665 | memcpy(frame->sa, vif->addr, ETH_ALEN); | |
666 | ||
fb98be5e DS |
667 | frame->frame_control = cpu_to_le16(IEEE80211_STYPE_PROBE_REQ); |
668 | eth_broadcast_addr(frame->da); | |
fb98be5e DS |
669 | eth_broadcast_addr(frame->bssid); |
670 | frame->seq_ctrl = 0; | |
671 | ||
672 | pos = frame->u.probe_req.variable; | |
673 | *pos++ = WLAN_EID_SSID; | |
674 | *pos++ = 0; | |
675 | ||
45d1b12e LC |
676 | params->preq.mac_header.offset = 0; |
677 | params->preq.mac_header.len = cpu_to_le16(24 + 2); | |
fb98be5e | 678 | |
66dc5272 AO |
679 | /* Insert ds parameter set element on 2.4 GHz band */ |
680 | newpos = iwl_mvm_copy_and_insert_ds_elem(mvm, | |
681 | ies->ies[IEEE80211_BAND_2GHZ], | |
682 | ies->len[IEEE80211_BAND_2GHZ], | |
683 | pos); | |
45d1b12e LC |
684 | params->preq.band_data[0].offset = cpu_to_le16(pos - params->preq.buf); |
685 | params->preq.band_data[0].len = cpu_to_le16(newpos - pos); | |
66dc5272 | 686 | pos = newpos; |
fb98be5e DS |
687 | |
688 | memcpy(pos, ies->ies[IEEE80211_BAND_5GHZ], | |
689 | ies->len[IEEE80211_BAND_5GHZ]); | |
45d1b12e LC |
690 | params->preq.band_data[1].offset = cpu_to_le16(pos - params->preq.buf); |
691 | params->preq.band_data[1].len = | |
692 | cpu_to_le16(ies->len[IEEE80211_BAND_5GHZ]); | |
fb98be5e DS |
693 | pos += ies->len[IEEE80211_BAND_5GHZ]; |
694 | ||
695 | memcpy(pos, ies->common_ies, ies->common_ie_len); | |
45d1b12e LC |
696 | params->preq.common_data.offset = cpu_to_le16(pos - params->preq.buf); |
697 | params->preq.common_data.len = cpu_to_le16(ies->common_ie_len); | |
fb98be5e DS |
698 | } |
699 | ||
d7afbfc4 AS |
700 | static __le32 iwl_mvm_scan_priority(struct iwl_mvm *mvm, |
701 | enum iwl_scan_priority_ext prio) | |
702 | { | |
859d914c JB |
703 | if (fw_has_api(&mvm->fw->ucode_capa, |
704 | IWL_UCODE_TLV_API_EXT_SCAN_PRIORITY)) | |
d7afbfc4 AS |
705 | return cpu_to_le32(prio); |
706 | ||
707 | if (prio <= IWL_SCAN_PRIORITY_EXT_2) | |
708 | return cpu_to_le32(IWL_SCAN_PRIORITY_LOW); | |
709 | ||
710 | if (prio <= IWL_SCAN_PRIORITY_EXT_4) | |
711 | return cpu_to_le32(IWL_SCAN_PRIORITY_MEDIUM); | |
712 | ||
713 | return cpu_to_le32(IWL_SCAN_PRIORITY_HIGH); | |
714 | } | |
715 | ||
133c8259 LC |
716 | static void iwl_mvm_scan_lmac_dwell(struct iwl_mvm *mvm, |
717 | struct iwl_scan_req_lmac *cmd, | |
718 | struct iwl_mvm_scan_params *params) | |
fb98be5e | 719 | { |
9437e994 DS |
720 | cmd->active_dwell = scan_timing[params->type].dwell_active; |
721 | cmd->passive_dwell = scan_timing[params->type].dwell_passive; | |
722 | cmd->fragmented_dwell = scan_timing[params->type].dwell_fragmented; | |
c3e230b1 | 723 | cmd->extended_dwell = scan_timing[params->type].dwell_extended; |
9437e994 DS |
724 | cmd->max_out_time = cpu_to_le32(scan_timing[params->type].max_out_time); |
725 | cmd->suspend_time = cpu_to_le32(scan_timing[params->type].suspend_time); | |
d7afbfc4 | 726 | cmd->scan_prio = iwl_mvm_scan_priority(mvm, IWL_SCAN_PRIORITY_EXT_6); |
fb98be5e DS |
727 | } |
728 | ||
999d2568 LC |
729 | static inline bool iwl_mvm_scan_fits(struct iwl_mvm *mvm, int n_ssids, |
730 | struct ieee80211_scan_ies *ies, | |
731 | int n_channels) | |
732 | { | |
733 | return ((n_ssids <= PROBE_OPTION_MAX) && | |
734 | (n_channels <= mvm->fw->ucode_capa.n_scan_channels) & | |
735 | (ies->common_ie_len + | |
736 | ies->len[NL80211_BAND_2GHZ] + | |
737 | ies->len[NL80211_BAND_5GHZ] <= | |
738 | iwl_mvm_max_scan_ie_fw_cmd_room(mvm))); | |
739 | } | |
740 | ||
15286e26 | 741 | static inline bool iwl_mvm_scan_use_ebs(struct iwl_mvm *mvm, |
cd55ccea | 742 | struct ieee80211_vif *vif) |
fb98be5e | 743 | { |
7d7de1e9 | 744 | const struct iwl_ucode_capabilities *capa = &mvm->fw->ucode_capa; |
fb98be5e | 745 | |
7d7de1e9 LC |
746 | /* We can only use EBS if: |
747 | * 1. the feature is supported; | |
748 | * 2. the last EBS was successful; | |
15286e26 DS |
749 | * 3. if only single scan, the single scan EBS API is supported; |
750 | * 4. it's not a p2p find operation. | |
7d7de1e9 LC |
751 | */ |
752 | return ((capa->flags & IWL_UCODE_TLV_FLAGS_EBS_SUPPORT) && | |
753 | mvm->last_ebs_successful && | |
15286e26 | 754 | vif->type != NL80211_IFTYPE_P2P_DEVICE); |
fb98be5e DS |
755 | } |
756 | ||
c3e230b1 DS |
757 | static inline bool iwl_mvm_is_regular_scan(struct iwl_mvm_scan_params *params) |
758 | { | |
759 | return params->n_scan_plans == 1 && | |
760 | params->scan_plans[0].iterations == 1; | |
761 | } | |
762 | ||
87515408 | 763 | static int iwl_mvm_scan_lmac_flags(struct iwl_mvm *mvm, |
c3e230b1 DS |
764 | struct iwl_mvm_scan_params *params, |
765 | struct ieee80211_vif *vif) | |
87515408 LC |
766 | { |
767 | int flags = 0; | |
768 | ||
769 | if (params->n_ssids == 0) | |
770 | flags |= IWL_MVM_LMAC_SCAN_FLAG_PASSIVE; | |
771 | ||
772 | if (params->n_ssids == 1 && params->ssids[0].ssid_len != 0) | |
773 | flags |= IWL_MVM_LMAC_SCAN_FLAG_PRE_CONNECTION; | |
774 | ||
9437e994 | 775 | if (params->type == IWL_SCAN_TYPE_FRAGMENTED) |
87515408 LC |
776 | flags |= IWL_MVM_LMAC_SCAN_FLAG_FRAGMENTED; |
777 | ||
778 | if (iwl_mvm_rrm_scan_needed(mvm)) | |
779 | flags |= IWL_MVM_LMAC_SCAN_FLAGS_RRM_ENABLED; | |
780 | ||
781 | if (params->pass_all) | |
782 | flags |= IWL_MVM_LMAC_SCAN_FLAG_PASS_ALL; | |
783 | else | |
784 | flags |= IWL_MVM_LMAC_SCAN_FLAG_MATCH; | |
785 | ||
786 | #ifdef CONFIG_IWLWIFI_DEBUGFS | |
787 | if (mvm->scan_iter_notif_enabled) | |
788 | flags |= IWL_MVM_LMAC_SCAN_FLAG_ITER_COMPLETE; | |
789 | #endif | |
790 | ||
c3e230b1 | 791 | if (iwl_mvm_is_regular_scan(params) && |
ca95ff3a DS |
792 | vif->type != NL80211_IFTYPE_P2P_DEVICE && |
793 | params->type != IWL_SCAN_TYPE_FRAGMENTED) | |
c3e230b1 DS |
794 | flags |= IWL_MVM_LMAC_SCAN_FLAG_EXTENDED_DWELL; |
795 | ||
87515408 LC |
796 | return flags; |
797 | } | |
798 | ||
7d7de1e9 LC |
799 | static int iwl_mvm_scan_lmac(struct iwl_mvm *mvm, struct ieee80211_vif *vif, |
800 | struct iwl_mvm_scan_params *params) | |
fb98be5e | 801 | { |
65ff556b | 802 | struct iwl_scan_req_lmac *cmd = mvm->scan_cmd; |
45d1b12e LC |
803 | struct iwl_scan_probe_req *preq = |
804 | (void *)(cmd->data + sizeof(struct iwl_scan_channel_cfg_lmac) * | |
805 | mvm->fw->ucode_capa.n_scan_channels); | |
87515408 | 806 | u32 ssid_bitmap = 0; |
cd55ccea | 807 | int i; |
fb98be5e DS |
808 | |
809 | lockdep_assert_held(&mvm->mutex); | |
810 | ||
133c8259 LC |
811 | memset(cmd, 0, ksize(cmd)); |
812 | ||
cd55ccea AS |
813 | if (WARN_ON(params->n_scan_plans > IWL_MAX_SCHED_SCAN_PLANS)) |
814 | return -EINVAL; | |
815 | ||
133c8259 | 816 | iwl_mvm_scan_lmac_dwell(mvm, cmd, params); |
fb98be5e | 817 | |
133c8259 LC |
818 | cmd->rx_chain_select = iwl_mvm_scan_rx_chain(mvm); |
819 | cmd->iter_num = cpu_to_le32(1); | |
f7b788b4 | 820 | cmd->n_channels = (u8)params->n_channels; |
fb98be5e | 821 | |
f7b788b4 | 822 | cmd->delay = cpu_to_le32(params->delay); |
2250fd94 | 823 | |
c3e230b1 DS |
824 | cmd->scan_flags = cpu_to_le32(iwl_mvm_scan_lmac_flags(mvm, params, |
825 | vif)); | |
fb98be5e | 826 | |
f7b788b4 | 827 | cmd->flags = iwl_mvm_scan_rxon_flags(params->channels[0]->band); |
fb98be5e DS |
828 | cmd->filter_flags = cpu_to_le32(MAC_FILTER_ACCEPT_GRP | |
829 | MAC_FILTER_IN_BEACON); | |
f7b788b4 | 830 | iwl_mvm_scan_fill_tx_cmd(mvm, cmd->tx_cmd, params->no_cck); |
e2ec4f6d LC |
831 | iwl_scan_build_ssids(params, cmd->direct_scan, &ssid_bitmap); |
832 | ||
833 | /* this API uses bits 1-20 instead of 0-19 */ | |
834 | ssid_bitmap <<= 1; | |
fb98be5e | 835 | |
cd55ccea | 836 | for (i = 0; i < params->n_scan_plans; i++) { |
cd55ccea AS |
837 | struct cfg80211_sched_scan_plan *scan_plan = |
838 | ¶ms->scan_plans[i]; | |
839 | ||
cd55ccea AS |
840 | cmd->schedule[i].delay = |
841 | cpu_to_le16(scan_plan->interval); | |
842 | cmd->schedule[i].iterations = scan_plan->iterations; | |
843 | cmd->schedule[i].full_scan_mul = 1; | |
844 | } | |
845 | ||
846 | /* | |
847 | * If the number of iterations of the last scan plan is set to | |
848 | * zero, it should run infinitely. However, this is not always the case. | |
849 | * For example, when regular scan is requested the driver sets one scan | |
850 | * plan with one iteration. | |
851 | */ | |
852 | if (!cmd->schedule[i - 1].iterations) | |
46eebec9 | 853 | cmd->schedule[i - 1].iterations = 0xff; |
fb98be5e | 854 | |
cd55ccea | 855 | if (iwl_mvm_scan_use_ebs(mvm, vif)) { |
1f9c418f DS |
856 | cmd->channel_opt[0].flags = |
857 | cpu_to_le16(IWL_SCAN_CHANNEL_FLAG_EBS | | |
858 | IWL_SCAN_CHANNEL_FLAG_EBS_ACCURATE | | |
859 | IWL_SCAN_CHANNEL_FLAG_CACHE_ADD); | |
860 | cmd->channel_opt[0].non_ebs_ratio = | |
861 | cpu_to_le16(IWL_DENSE_EBS_SCAN_RATIO); | |
862 | cmd->channel_opt[1].flags = | |
863 | cpu_to_le16(IWL_SCAN_CHANNEL_FLAG_EBS | | |
864 | IWL_SCAN_CHANNEL_FLAG_EBS_ACCURATE | | |
865 | IWL_SCAN_CHANNEL_FLAG_CACHE_ADD); | |
866 | cmd->channel_opt[1].non_ebs_ratio = | |
867 | cpu_to_le16(IWL_SPARSE_EBS_SCAN_RATIO); | |
868 | } | |
869 | ||
f7b788b4 LC |
870 | iwl_mvm_lmac_scan_cfg_channels(mvm, params->channels, |
871 | params->n_channels, ssid_bitmap, cmd); | |
fb98be5e | 872 | |
45d1b12e | 873 | *preq = params->preq; |
fb98be5e | 874 | |
8df3e68f | 875 | return 0; |
fb98be5e DS |
876 | } |
877 | ||
d2496221 DS |
878 | static int rate_to_scan_rate_flag(unsigned int rate) |
879 | { | |
880 | static const int rate_to_scan_rate[IWL_RATE_COUNT] = { | |
881 | [IWL_RATE_1M_INDEX] = SCAN_CONFIG_RATE_1M, | |
882 | [IWL_RATE_2M_INDEX] = SCAN_CONFIG_RATE_2M, | |
883 | [IWL_RATE_5M_INDEX] = SCAN_CONFIG_RATE_5M, | |
884 | [IWL_RATE_11M_INDEX] = SCAN_CONFIG_RATE_11M, | |
885 | [IWL_RATE_6M_INDEX] = SCAN_CONFIG_RATE_6M, | |
886 | [IWL_RATE_9M_INDEX] = SCAN_CONFIG_RATE_9M, | |
887 | [IWL_RATE_12M_INDEX] = SCAN_CONFIG_RATE_12M, | |
888 | [IWL_RATE_18M_INDEX] = SCAN_CONFIG_RATE_18M, | |
889 | [IWL_RATE_24M_INDEX] = SCAN_CONFIG_RATE_24M, | |
890 | [IWL_RATE_36M_INDEX] = SCAN_CONFIG_RATE_36M, | |
891 | [IWL_RATE_48M_INDEX] = SCAN_CONFIG_RATE_48M, | |
892 | [IWL_RATE_54M_INDEX] = SCAN_CONFIG_RATE_54M, | |
893 | }; | |
894 | ||
895 | return rate_to_scan_rate[rate]; | |
896 | } | |
897 | ||
898 | static __le32 iwl_mvm_scan_config_rates(struct iwl_mvm *mvm) | |
899 | { | |
900 | struct ieee80211_supported_band *band; | |
901 | unsigned int rates = 0; | |
902 | int i; | |
903 | ||
904 | band = &mvm->nvm_data->bands[IEEE80211_BAND_2GHZ]; | |
905 | for (i = 0; i < band->n_bitrates; i++) | |
906 | rates |= rate_to_scan_rate_flag(band->bitrates[i].hw_value); | |
907 | band = &mvm->nvm_data->bands[IEEE80211_BAND_5GHZ]; | |
908 | for (i = 0; i < band->n_bitrates; i++) | |
909 | rates |= rate_to_scan_rate_flag(band->bitrates[i].hw_value); | |
910 | ||
911 | /* Set both basic rates and supported rates */ | |
912 | rates |= SCAN_CONFIG_SUPPORTED_RATE(rates); | |
913 | ||
914 | return cpu_to_le32(rates); | |
915 | } | |
916 | ||
917 | int iwl_mvm_config_scan(struct iwl_mvm *mvm) | |
918 | { | |
d2496221 DS |
919 | struct iwl_scan_config *scan_config; |
920 | struct ieee80211_supported_band *band; | |
921 | int num_channels = | |
922 | mvm->nvm_data->bands[IEEE80211_BAND_2GHZ].n_channels + | |
923 | mvm->nvm_data->bands[IEEE80211_BAND_5GHZ].n_channels; | |
88742c9e | 924 | int ret, i, j = 0, cmd_size; |
d2496221 | 925 | struct iwl_host_cmd cmd = { |
88742c9e | 926 | .id = iwl_cmd_id(SCAN_CFG_CMD, IWL_ALWAYS_LONG_GROUP, 0), |
d2496221 | 927 | }; |
355346ba | 928 | enum iwl_mvm_scan_type type = iwl_mvm_get_scan_type(mvm, false); |
d2496221 DS |
929 | |
930 | if (WARN_ON(num_channels > mvm->fw->ucode_capa.n_scan_channels)) | |
931 | return -ENOBUFS; | |
932 | ||
355346ba AS |
933 | if (type == mvm->scan_type) |
934 | return 0; | |
935 | ||
d2496221 DS |
936 | cmd_size = sizeof(*scan_config) + mvm->fw->ucode_capa.n_scan_channels; |
937 | ||
938 | scan_config = kzalloc(cmd_size, GFP_KERNEL); | |
939 | if (!scan_config) | |
940 | return -ENOMEM; | |
941 | ||
d2496221 DS |
942 | scan_config->flags = cpu_to_le32(SCAN_CONFIG_FLAG_ACTIVATE | |
943 | SCAN_CONFIG_FLAG_ALLOW_CHUB_REQS | | |
944 | SCAN_CONFIG_FLAG_SET_TX_CHAINS | | |
945 | SCAN_CONFIG_FLAG_SET_RX_CHAINS | | |
946 | SCAN_CONFIG_FLAG_SET_ALL_TIMES | | |
947 | SCAN_CONFIG_FLAG_SET_LEGACY_RATES | | |
948 | SCAN_CONFIG_FLAG_SET_MAC_ADDR | | |
949 | SCAN_CONFIG_FLAG_SET_CHANNEL_FLAGS| | |
f9d71644 | 950 | SCAN_CONFIG_N_CHANNELS(num_channels) | |
355346ba | 951 | (type == IWL_SCAN_TYPE_FRAGMENTED ? |
f9d71644 AS |
952 | SCAN_CONFIG_FLAG_SET_FRAGMENTED : |
953 | SCAN_CONFIG_FLAG_CLEAR_FRAGMENTED)); | |
a0544272 | 954 | scan_config->tx_chains = cpu_to_le32(iwl_mvm_get_valid_tx_ant(mvm)); |
d2496221 DS |
955 | scan_config->rx_chains = cpu_to_le32(iwl_mvm_scan_rx_ant(mvm)); |
956 | scan_config->legacy_rates = iwl_mvm_scan_config_rates(mvm); | |
355346ba AS |
957 | scan_config->out_of_channel_time = |
958 | cpu_to_le32(scan_timing[type].max_out_time); | |
959 | scan_config->suspend_time = cpu_to_le32(scan_timing[type].suspend_time); | |
960 | scan_config->dwell_active = scan_timing[type].dwell_active; | |
961 | scan_config->dwell_passive = scan_timing[type].dwell_passive; | |
962 | scan_config->dwell_fragmented = scan_timing[type].dwell_fragmented; | |
c3e230b1 | 963 | scan_config->dwell_extended = scan_timing[type].dwell_extended; |
d2496221 DS |
964 | |
965 | memcpy(&scan_config->mac_addr, &mvm->addresses[0].addr, ETH_ALEN); | |
966 | ||
967 | scan_config->bcast_sta_id = mvm->aux_sta.sta_id; | |
968 | scan_config->channel_flags = IWL_CHANNEL_FLAG_EBS | | |
969 | IWL_CHANNEL_FLAG_ACCURATE_EBS | | |
970 | IWL_CHANNEL_FLAG_EBS_ADD | | |
971 | IWL_CHANNEL_FLAG_PRE_SCAN_PASSIVE2ACTIVE; | |
972 | ||
973 | band = &mvm->nvm_data->bands[IEEE80211_BAND_2GHZ]; | |
974 | for (i = 0; i < band->n_channels; i++, j++) | |
a25d40e2 | 975 | scan_config->channel_array[j] = band->channels[i].hw_value; |
d2496221 DS |
976 | band = &mvm->nvm_data->bands[IEEE80211_BAND_5GHZ]; |
977 | for (i = 0; i < band->n_channels; i++, j++) | |
a25d40e2 | 978 | scan_config->channel_array[j] = band->channels[i].hw_value; |
d2496221 DS |
979 | |
980 | cmd.data[0] = scan_config; | |
981 | cmd.len[0] = cmd_size; | |
982 | cmd.dataflags[0] = IWL_HCMD_DFL_NOCOPY; | |
983 | ||
984 | IWL_DEBUG_SCAN(mvm, "Sending UMAC scan config\n"); | |
985 | ||
986 | ret = iwl_mvm_send_cmd(mvm, &cmd); | |
355346ba AS |
987 | if (!ret) |
988 | mvm->scan_type = type; | |
d2496221 DS |
989 | |
990 | kfree(scan_config); | |
991 | return ret; | |
992 | } | |
993 | ||
6185af2a | 994 | static int iwl_mvm_scan_uid_by_status(struct iwl_mvm *mvm, int status) |
d2496221 DS |
995 | { |
996 | int i; | |
997 | ||
507e4cda | 998 | for (i = 0; i < mvm->max_scans; i++) |
6185af2a | 999 | if (mvm->scan_uid_status[i] == status) |
d2496221 DS |
1000 | return i; |
1001 | ||
6185af2a | 1002 | return -ENOENT; |
d2496221 DS |
1003 | } |
1004 | ||
133c8259 | 1005 | static void iwl_mvm_scan_umac_dwell(struct iwl_mvm *mvm, |
d2496221 DS |
1006 | struct iwl_scan_req_umac *cmd, |
1007 | struct iwl_mvm_scan_params *params) | |
1008 | { | |
c3e230b1 | 1009 | cmd->extended_dwell = scan_timing[params->type].dwell_extended; |
9437e994 DS |
1010 | cmd->active_dwell = scan_timing[params->type].dwell_active; |
1011 | cmd->passive_dwell = scan_timing[params->type].dwell_passive; | |
1012 | cmd->fragmented_dwell = scan_timing[params->type].dwell_fragmented; | |
1013 | cmd->max_out_time = cpu_to_le32(scan_timing[params->type].max_out_time); | |
1014 | cmd->suspend_time = cpu_to_le32(scan_timing[params->type].suspend_time); | |
d7afbfc4 AS |
1015 | cmd->scan_priority = |
1016 | iwl_mvm_scan_priority(mvm, IWL_SCAN_PRIORITY_EXT_6); | |
133c8259 | 1017 | |
cd55ccea | 1018 | if (iwl_mvm_is_regular_scan(params)) |
d7afbfc4 AS |
1019 | cmd->ooc_priority = |
1020 | iwl_mvm_scan_priority(mvm, IWL_SCAN_PRIORITY_EXT_6); | |
133c8259 | 1021 | else |
d7afbfc4 AS |
1022 | cmd->ooc_priority = |
1023 | iwl_mvm_scan_priority(mvm, IWL_SCAN_PRIORITY_EXT_2); | |
d2496221 DS |
1024 | } |
1025 | ||
1026 | static void | |
1027 | iwl_mvm_umac_scan_cfg_channels(struct iwl_mvm *mvm, | |
1028 | struct ieee80211_channel **channels, | |
1029 | int n_channels, u32 ssid_bitmap, | |
1030 | struct iwl_scan_req_umac *cmd) | |
1031 | { | |
1032 | struct iwl_scan_channel_cfg_umac *channel_cfg = (void *)&cmd->data; | |
1033 | int i; | |
1034 | ||
1035 | for (i = 0; i < n_channels; i++) { | |
1036 | channel_cfg[i].flags = cpu_to_le32(ssid_bitmap); | |
1037 | channel_cfg[i].channel_num = channels[i]->hw_value; | |
1038 | channel_cfg[i].iter_count = 1; | |
1039 | channel_cfg[i].iter_interval = 0; | |
1040 | } | |
1041 | } | |
1042 | ||
6f4dcc76 | 1043 | static u32 iwl_mvm_scan_umac_flags(struct iwl_mvm *mvm, |
c3e230b1 DS |
1044 | struct iwl_mvm_scan_params *params, |
1045 | struct ieee80211_vif *vif) | |
d2496221 DS |
1046 | { |
1047 | int flags = 0; | |
1048 | ||
6f4dcc76 | 1049 | if (params->n_ssids == 0) |
d2496221 DS |
1050 | flags = IWL_UMAC_SCAN_GEN_FLAGS_PASSIVE; |
1051 | ||
6f4dcc76 | 1052 | if (params->n_ssids == 1 && params->ssids[0].ssid_len != 0) |
d2496221 DS |
1053 | flags |= IWL_UMAC_SCAN_GEN_FLAGS_PRE_CONNECT; |
1054 | ||
9437e994 | 1055 | if (params->type == IWL_SCAN_TYPE_FRAGMENTED) |
d2496221 DS |
1056 | flags |= IWL_UMAC_SCAN_GEN_FLAGS_FRAGMENTED; |
1057 | ||
1058 | if (iwl_mvm_rrm_scan_needed(mvm)) | |
1059 | flags |= IWL_UMAC_SCAN_GEN_FLAGS_RRM_ENABLED; | |
1060 | ||
6f4dcc76 LC |
1061 | if (params->pass_all) |
1062 | flags |= IWL_UMAC_SCAN_GEN_FLAGS_PASS_ALL; | |
1063 | else | |
1064 | flags |= IWL_UMAC_SCAN_GEN_FLAGS_MATCH; | |
1065 | ||
cd55ccea | 1066 | if (!iwl_mvm_is_regular_scan(params)) |
6f4dcc76 LC |
1067 | flags |= IWL_UMAC_SCAN_GEN_FLAGS_PERIODIC; |
1068 | ||
ee9219b2 AS |
1069 | #ifdef CONFIG_IWLWIFI_DEBUGFS |
1070 | if (mvm->scan_iter_notif_enabled) | |
1071 | flags |= IWL_UMAC_SCAN_GEN_FLAGS_ITER_COMPLETE; | |
1072 | #endif | |
c3e230b1 DS |
1073 | |
1074 | if (iwl_mvm_is_regular_scan(params) && | |
ca95ff3a DS |
1075 | vif->type != NL80211_IFTYPE_P2P_DEVICE && |
1076 | params->type != IWL_SCAN_TYPE_FRAGMENTED) | |
c3e230b1 DS |
1077 | flags |= IWL_UMAC_SCAN_GEN_FLAGS_EXTENDED_DWELL; |
1078 | ||
d2496221 DS |
1079 | return flags; |
1080 | } | |
1081 | ||
6749dd80 | 1082 | static int iwl_mvm_scan_umac(struct iwl_mvm *mvm, struct ieee80211_vif *vif, |
6185af2a LC |
1083 | struct iwl_mvm_scan_params *params, |
1084 | int type) | |
d2496221 | 1085 | { |
d2496221 DS |
1086 | struct iwl_scan_req_umac *cmd = mvm->scan_cmd; |
1087 | struct iwl_scan_req_umac_tail *sec_part = (void *)&cmd->data + | |
1088 | sizeof(struct iwl_scan_channel_cfg_umac) * | |
1089 | mvm->fw->ucode_capa.n_scan_channels; | |
cd55ccea | 1090 | int uid, i; |
c8660dd5 | 1091 | u32 ssid_bitmap = 0; |
d2496221 DS |
1092 | |
1093 | lockdep_assert_held(&mvm->mutex); | |
1094 | ||
cd55ccea AS |
1095 | if (WARN_ON(params->n_scan_plans > IWL_MAX_SCHED_SCAN_PLANS)) |
1096 | return -EINVAL; | |
1097 | ||
6185af2a LC |
1098 | uid = iwl_mvm_scan_uid_by_status(mvm, 0); |
1099 | if (uid < 0) | |
1100 | return uid; | |
d2496221 | 1101 | |
133c8259 | 1102 | memset(cmd, 0, ksize(cmd)); |
d2496221 | 1103 | |
133c8259 LC |
1104 | iwl_mvm_scan_umac_dwell(mvm, cmd, params); |
1105 | ||
6185af2a | 1106 | mvm->scan_uid_status[uid] = type; |
d2496221 | 1107 | |
d2496221 | 1108 | cmd->uid = cpu_to_le32(uid); |
c3e230b1 DS |
1109 | cmd->general_flags = cpu_to_le32(iwl_mvm_scan_umac_flags(mvm, params, |
1110 | vif)); | |
d2496221 | 1111 | |
8465fe6a AS |
1112 | if (type == IWL_MVM_SCAN_SCHED) |
1113 | cmd->flags = cpu_to_le32(IWL_UMAC_SCAN_FLAG_PREEMPTIVE); | |
1114 | ||
cd55ccea | 1115 | if (iwl_mvm_scan_use_ebs(mvm, vif)) |
d2496221 DS |
1116 | cmd->channel_flags = IWL_SCAN_CHANNEL_FLAG_EBS | |
1117 | IWL_SCAN_CHANNEL_FLAG_EBS_ACCURATE | | |
1118 | IWL_SCAN_CHANNEL_FLAG_CACHE_ADD; | |
1119 | ||
f7b788b4 | 1120 | cmd->n_channels = params->n_channels; |
d2496221 | 1121 | |
e2ec4f6d | 1122 | iwl_scan_build_ssids(params, sec_part->direct_scan, &ssid_bitmap); |
d2496221 | 1123 | |
f7b788b4 LC |
1124 | iwl_mvm_umac_scan_cfg_channels(mvm, params->channels, |
1125 | params->n_channels, ssid_bitmap, cmd); | |
d2496221 | 1126 | |
cd55ccea | 1127 | for (i = 0; i < params->n_scan_plans; i++) { |
cd55ccea AS |
1128 | struct cfg80211_sched_scan_plan *scan_plan = |
1129 | ¶ms->scan_plans[i]; | |
1130 | ||
cd55ccea AS |
1131 | sec_part->schedule[i].iter_count = scan_plan->iterations; |
1132 | sec_part->schedule[i].interval = | |
1133 | cpu_to_le16(scan_plan->interval); | |
1134 | } | |
1135 | ||
1136 | /* | |
1137 | * If the number of iterations of the last scan plan is set to | |
1138 | * zero, it should run infinitely. However, this is not always the case. | |
1139 | * For example, when regular scan is requested the driver sets one scan | |
1140 | * plan with one iteration. | |
8423cdc3 | 1141 | */ |
cd55ccea AS |
1142 | if (!sec_part->schedule[i - 1].iter_count) |
1143 | sec_part->schedule[i - 1].iter_count = 0xff; | |
cf5d317d | 1144 | |
283c2491 | 1145 | sec_part->delay = cpu_to_le16(params->delay); |
45d1b12e | 1146 | sec_part->preq = params->preq; |
d2496221 | 1147 | |
8df3e68f | 1148 | return 0; |
d2496221 DS |
1149 | } |
1150 | ||
6749dd80 LC |
1151 | static int iwl_mvm_num_scans(struct iwl_mvm *mvm) |
1152 | { | |
1153 | return hweight32(mvm->scan_status & IWL_MVM_SCAN_MASK); | |
1154 | } | |
1155 | ||
1156 | static int iwl_mvm_check_running_scans(struct iwl_mvm *mvm, int type) | |
1157 | { | |
1158 | /* This looks a bit arbitrary, but the idea is that if we run | |
1159 | * out of possible simultaneous scans and the userspace is | |
1160 | * trying to run a scan type that is already running, we | |
1161 | * return -EBUSY. But if the userspace wants to start a | |
1162 | * different type of scan, we stop the opposite type to make | |
1163 | * space for the new request. The reason is backwards | |
1164 | * compatibility with old wpa_supplicant that wouldn't stop a | |
1165 | * scheduled scan before starting a normal scan. | |
1166 | */ | |
1167 | ||
1168 | if (iwl_mvm_num_scans(mvm) < mvm->max_scans) | |
1169 | return 0; | |
1170 | ||
1171 | /* Use a switch, even though this is a bitmask, so that more | |
1172 | * than one bits set will fall in default and we will warn. | |
1173 | */ | |
1174 | switch (type) { | |
1175 | case IWL_MVM_SCAN_REGULAR: | |
1176 | if (mvm->scan_status & IWL_MVM_SCAN_REGULAR_MASK) | |
1177 | return -EBUSY; | |
c7d42480 | 1178 | return iwl_mvm_scan_stop(mvm, IWL_MVM_SCAN_SCHED, true); |
6749dd80 LC |
1179 | case IWL_MVM_SCAN_SCHED: |
1180 | if (mvm->scan_status & IWL_MVM_SCAN_SCHED_MASK) | |
1181 | return -EBUSY; | |
04b08992 | 1182 | return iwl_mvm_scan_stop(mvm, IWL_MVM_SCAN_REGULAR, true); |
19945dfb LC |
1183 | case IWL_MVM_SCAN_NETDETECT: |
1184 | /* No need to stop anything for net-detect since the | |
1185 | * firmware is restarted anyway. This way, any sched | |
1186 | * scans that were running will be restarted when we | |
1187 | * resume. | |
1188 | */ | |
1189 | return 0; | |
6749dd80 LC |
1190 | default: |
1191 | WARN_ON(1); | |
1192 | break; | |
1193 | } | |
1194 | ||
1195 | return -EIO; | |
1196 | } | |
1197 | ||
1198 | int iwl_mvm_reg_scan_start(struct iwl_mvm *mvm, struct ieee80211_vif *vif, | |
1199 | struct cfg80211_scan_request *req, | |
1200 | struct ieee80211_scan_ies *ies) | |
1201 | { | |
3db7c6e7 LC |
1202 | struct iwl_host_cmd hcmd = { |
1203 | .len = { iwl_mvm_scan_size(mvm), }, | |
1204 | .data = { mvm->scan_cmd, }, | |
1205 | .dataflags = { IWL_HCMD_DFL_NOCOPY, }, | |
1206 | }; | |
1207 | struct iwl_mvm_scan_params params = {}; | |
6749dd80 | 1208 | int ret; |
cd55ccea | 1209 | struct cfg80211_sched_scan_plan scan_plan = { .iterations = 1 }; |
6749dd80 LC |
1210 | |
1211 | lockdep_assert_held(&mvm->mutex); | |
1212 | ||
1213 | if (iwl_mvm_is_lar_supported(mvm) && !mvm->lar_regdom_set) { | |
1214 | IWL_ERR(mvm, "scan while LAR regdomain is not set\n"); | |
1215 | return -EBUSY; | |
1216 | } | |
1217 | ||
1218 | ret = iwl_mvm_check_running_scans(mvm, IWL_MVM_SCAN_REGULAR); | |
1219 | if (ret) | |
1220 | return ret; | |
1221 | ||
3db7c6e7 LC |
1222 | /* we should have failed registration if scan_cmd was NULL */ |
1223 | if (WARN_ON(!mvm->scan_cmd)) | |
1224 | return -ENOMEM; | |
1225 | ||
1226 | if (!iwl_mvm_scan_fits(mvm, req->n_ssids, ies, req->n_channels)) | |
1227 | return -ENOBUFS; | |
1228 | ||
4b817051 LC |
1229 | params.n_ssids = req->n_ssids; |
1230 | params.flags = req->flags; | |
f7b788b4 LC |
1231 | params.n_channels = req->n_channels; |
1232 | params.delay = 0; | |
f7b788b4 LC |
1233 | params.ssids = req->ssids; |
1234 | params.channels = req->channels; | |
1235 | params.mac_addr = req->mac_addr; | |
1236 | params.mac_addr_mask = req->mac_addr_mask; | |
1237 | params.no_cck = req->no_cck; | |
1238 | params.pass_all = true; | |
1239 | params.n_match_sets = 0; | |
1240 | params.match_sets = NULL; | |
3db7c6e7 | 1241 | |
cd55ccea AS |
1242 | params.scan_plans = &scan_plan; |
1243 | params.n_scan_plans = 1; | |
cf5d317d | 1244 | |
355346ba AS |
1245 | params.type = |
1246 | iwl_mvm_get_scan_type(mvm, | |
1247 | vif->type == NL80211_IFTYPE_P2P_DEVICE); | |
4b817051 | 1248 | |
45d1b12e LC |
1249 | iwl_mvm_build_scan_probe(mvm, vif, ies, ¶ms); |
1250 | ||
859d914c | 1251 | if (fw_has_capa(&mvm->fw->ucode_capa, IWL_UCODE_TLV_CAPA_UMAC_SCAN)) { |
88742c9e | 1252 | hcmd.id = iwl_cmd_id(SCAN_REQ_UMAC, IWL_ALWAYS_LONG_GROUP, 0); |
6185af2a LC |
1253 | ret = iwl_mvm_scan_umac(mvm, vif, ¶ms, |
1254 | IWL_MVM_SCAN_REGULAR); | |
3db7c6e7 LC |
1255 | } else { |
1256 | hcmd.id = SCAN_OFFLOAD_REQUEST_CMD; | |
45d1b12e | 1257 | ret = iwl_mvm_scan_lmac(mvm, vif, ¶ms); |
3db7c6e7 LC |
1258 | } |
1259 | ||
1260 | if (ret) | |
1261 | return ret; | |
1262 | ||
1263 | ret = iwl_mvm_send_cmd(mvm, &hcmd); | |
78ba82f7 | 1264 | if (ret) { |
3db7c6e7 LC |
1265 | /* If the scan failed, it usually means that the FW was unable |
1266 | * to allocate the time events. Warn on it, but maybe we | |
1267 | * should try to send the command again with different params. | |
1268 | */ | |
1269 | IWL_ERR(mvm, "Scan failed! ret %d\n", ret); | |
78ba82f7 | 1270 | return ret; |
3db7c6e7 | 1271 | } |
6749dd80 | 1272 | |
78ba82f7 EP |
1273 | IWL_DEBUG_SCAN(mvm, "Scan request was sent successfully\n"); |
1274 | mvm->scan_status |= IWL_MVM_SCAN_REGULAR; | |
1275 | iwl_mvm_ref(mvm, IWL_MVM_REF_SCAN); | |
6749dd80 | 1276 | |
78ba82f7 | 1277 | return 0; |
6749dd80 LC |
1278 | } |
1279 | ||
65ff556b LC |
1280 | int iwl_mvm_sched_scan_start(struct iwl_mvm *mvm, |
1281 | struct ieee80211_vif *vif, | |
1282 | struct cfg80211_sched_scan_request *req, | |
19945dfb LC |
1283 | struct ieee80211_scan_ies *ies, |
1284 | int type) | |
65ff556b | 1285 | { |
8df3e68f LC |
1286 | struct iwl_host_cmd hcmd = { |
1287 | .len = { iwl_mvm_scan_size(mvm), }, | |
1288 | .data = { mvm->scan_cmd, }, | |
1289 | .dataflags = { IWL_HCMD_DFL_NOCOPY, }, | |
1290 | }; | |
1291 | struct iwl_mvm_scan_params params = {}; | |
65ff556b LC |
1292 | int ret; |
1293 | ||
6749dd80 LC |
1294 | lockdep_assert_held(&mvm->mutex); |
1295 | ||
1296 | if (iwl_mvm_is_lar_supported(mvm) && !mvm->lar_regdom_set) { | |
1297 | IWL_ERR(mvm, "sched-scan while LAR regdomain is not set\n"); | |
1298 | return -EBUSY; | |
1299 | } | |
1300 | ||
5e56276e LC |
1301 | /* we don't support "match all" in the firmware */ |
1302 | if (!req->n_match_sets) | |
1303 | return -EOPNOTSUPP; | |
1304 | ||
19945dfb | 1305 | ret = iwl_mvm_check_running_scans(mvm, type); |
6749dd80 LC |
1306 | if (ret) |
1307 | return ret; | |
1308 | ||
8df3e68f LC |
1309 | /* we should have failed registration if scan_cmd was NULL */ |
1310 | if (WARN_ON(!mvm->scan_cmd)) | |
1311 | return -ENOMEM; | |
1312 | ||
1313 | if (!iwl_mvm_scan_fits(mvm, req->n_ssids, ies, req->n_channels)) | |
1314 | return -ENOBUFS; | |
1315 | ||
4b817051 LC |
1316 | params.n_ssids = req->n_ssids; |
1317 | params.flags = req->flags; | |
f7b788b4 | 1318 | params.n_channels = req->n_channels; |
f7b788b4 LC |
1319 | params.ssids = req->ssids; |
1320 | params.channels = req->channels; | |
1321 | params.mac_addr = req->mac_addr; | |
1322 | params.mac_addr_mask = req->mac_addr_mask; | |
1323 | params.no_cck = false; | |
1324 | params.pass_all = iwl_mvm_scan_pass_all(mvm, req); | |
1325 | params.n_match_sets = req->n_match_sets; | |
1326 | params.match_sets = req->match_sets; | |
cd55ccea AS |
1327 | if (!req->n_scan_plans) |
1328 | return -EINVAL; | |
f7b788b4 | 1329 | |
cd55ccea AS |
1330 | params.n_scan_plans = req->n_scan_plans; |
1331 | params.scan_plans = req->scan_plans; | |
3b44a0ef | 1332 | |
355346ba AS |
1333 | params.type = |
1334 | iwl_mvm_get_scan_type(mvm, | |
1335 | vif->type == NL80211_IFTYPE_P2P_DEVICE); | |
cf5d317d | 1336 | |
283c2491 LC |
1337 | /* In theory, LMAC scans can handle a 32-bit delay, but since |
1338 | * waiting for over 18 hours to start the scan is a bit silly | |
1339 | * and to keep it aligned with UMAC scans (which only support | |
1340 | * 16-bit delays), trim it down to 16-bits. | |
1341 | */ | |
1342 | if (req->delay > U16_MAX) { | |
1343 | IWL_DEBUG_SCAN(mvm, | |
1344 | "delay value is > 16-bits, set to max possible\n"); | |
1345 | params.delay = U16_MAX; | |
1346 | } else { | |
1347 | params.delay = req->delay; | |
1348 | } | |
1349 | ||
65ff556b LC |
1350 | ret = iwl_mvm_config_sched_scan_profiles(mvm, req); |
1351 | if (ret) | |
1352 | return ret; | |
1353 | ||
45d1b12e LC |
1354 | iwl_mvm_build_scan_probe(mvm, vif, ies, ¶ms); |
1355 | ||
859d914c | 1356 | if (fw_has_capa(&mvm->fw->ucode_capa, IWL_UCODE_TLV_CAPA_UMAC_SCAN)) { |
88742c9e | 1357 | hcmd.id = iwl_cmd_id(SCAN_REQ_UMAC, IWL_ALWAYS_LONG_GROUP, 0); |
6185af2a | 1358 | ret = iwl_mvm_scan_umac(mvm, vif, ¶ms, IWL_MVM_SCAN_SCHED); |
65ff556b | 1359 | } else { |
8df3e68f | 1360 | hcmd.id = SCAN_OFFLOAD_REQUEST_CMD; |
7d7de1e9 | 1361 | ret = iwl_mvm_scan_lmac(mvm, vif, ¶ms); |
8df3e68f LC |
1362 | } |
1363 | ||
1364 | if (ret) | |
1365 | return ret; | |
1366 | ||
1367 | ret = iwl_mvm_send_cmd(mvm, &hcmd); | |
1368 | if (!ret) { | |
1369 | IWL_DEBUG_SCAN(mvm, | |
1370 | "Sched scan request was sent successfully\n"); | |
1371 | mvm->scan_status |= type; | |
1372 | } else { | |
1373 | /* If the scan failed, it usually means that the FW was unable | |
1374 | * to allocate the time events. Warn on it, but maybe we | |
1375 | * should try to send the command again with different params. | |
1376 | */ | |
1377 | IWL_ERR(mvm, "Sched scan failed! ret %d\n", ret); | |
65ff556b LC |
1378 | } |
1379 | ||
1380 | return ret; | |
1381 | } | |
1382 | ||
0416841d JB |
1383 | void iwl_mvm_rx_umac_scan_complete_notif(struct iwl_mvm *mvm, |
1384 | struct iwl_rx_cmd_buffer *rxb) | |
d2496221 DS |
1385 | { |
1386 | struct iwl_rx_packet *pkt = rxb_addr(rxb); | |
1387 | struct iwl_umac_scan_complete *notif = (void *)pkt->data; | |
1388 | u32 uid = __le32_to_cpu(notif->uid); | |
8d14ccd8 | 1389 | bool aborted = (notif->status == IWL_SCAN_OFFLOAD_ABORTED); |
d2496221 | 1390 | |
8d14ccd8 | 1391 | if (WARN_ON(!(mvm->scan_uid_status[uid] & mvm->scan_status))) |
0416841d | 1392 | return; |
d2496221 | 1393 | |
8d14ccd8 LC |
1394 | /* if the scan is already stopping, we don't need to notify mac80211 */ |
1395 | if (mvm->scan_uid_status[uid] == IWL_MVM_SCAN_REGULAR) { | |
1396 | ieee80211_scan_completed(mvm->hw, aborted); | |
1397 | iwl_mvm_unref(mvm, IWL_MVM_REF_SCAN); | |
1398 | } else if (mvm->scan_uid_status[uid] == IWL_MVM_SCAN_SCHED) { | |
1399 | ieee80211_sched_scan_stopped(mvm->hw); | |
1400 | } | |
1401 | ||
1402 | mvm->scan_status &= ~mvm->scan_uid_status[uid]; | |
d2496221 | 1403 | IWL_DEBUG_SCAN(mvm, |
a7b3bc91 | 1404 | "Scan completed, uid %u type %u, status %s, EBS status %s\n", |
8d14ccd8 | 1405 | uid, mvm->scan_uid_status[uid], |
d2496221 DS |
1406 | notif->status == IWL_SCAN_OFFLOAD_COMPLETED ? |
1407 | "completed" : "aborted", | |
a7b3bc91 AB |
1408 | iwl_mvm_ebs_status_str(notif->ebs_status)); |
1409 | IWL_DEBUG_SCAN(mvm, | |
1410 | "Last line %d, Last iteration %d, Time from last iteration %d\n", | |
1a84e771 AB |
1411 | notif->last_schedule, notif->last_iter, |
1412 | __le32_to_cpu(notif->time_from_last_iter)); | |
d2496221 | 1413 | |
f0bf8593 DS |
1414 | if (notif->ebs_status != IWL_SCAN_EBS_SUCCESS && |
1415 | notif->ebs_status != IWL_SCAN_EBS_INACTIVE) | |
5a4b2afa HD |
1416 | mvm->last_ebs_successful = false; |
1417 | ||
6185af2a | 1418 | mvm->scan_uid_status[uid] = 0; |
d2496221 DS |
1419 | } |
1420 | ||
0416841d JB |
1421 | void iwl_mvm_rx_umac_scan_iter_complete_notif(struct iwl_mvm *mvm, |
1422 | struct iwl_rx_cmd_buffer *rxb) | |
ee9219b2 AS |
1423 | { |
1424 | struct iwl_rx_packet *pkt = rxb_addr(rxb); | |
1425 | struct iwl_umac_scan_iter_complete_notif *notif = (void *)pkt->data; | |
1426 | u8 buf[256]; | |
1427 | ||
1428 | IWL_DEBUG_SCAN(mvm, | |
1429 | "UMAC Scan iteration complete: status=0x%x scanned_channels=%d channels list: %s\n", | |
1430 | notif->status, notif->scanned_channels, | |
1431 | iwl_mvm_dump_channel_list(notif->results, | |
1432 | notif->scanned_channels, buf, | |
1433 | sizeof(buf))); | |
ee9219b2 AS |
1434 | } |
1435 | ||
434f3c1b | 1436 | static int iwl_mvm_umac_scan_abort(struct iwl_mvm *mvm, int type) |
d2496221 | 1437 | { |
88742c9e | 1438 | struct iwl_umac_scan_abort cmd = {}; |
434f3c1b | 1439 | int uid, ret; |
d2496221 DS |
1440 | |
1441 | lockdep_assert_held(&mvm->mutex); | |
1442 | ||
434f3c1b LC |
1443 | /* We should always get a valid index here, because we already |
1444 | * checked that this type of scan was running in the generic | |
1445 | * code. | |
1446 | */ | |
1447 | uid = iwl_mvm_scan_uid_by_status(mvm, type); | |
1448 | if (WARN_ON_ONCE(uid < 0)) | |
1449 | return uid; | |
1450 | ||
1451 | cmd.uid = cpu_to_le32(uid); | |
1452 | ||
d2496221 DS |
1453 | IWL_DEBUG_SCAN(mvm, "Sending scan abort, uid %u\n", uid); |
1454 | ||
88742c9e JB |
1455 | ret = iwl_mvm_send_cmd_pdu(mvm, |
1456 | iwl_cmd_id(SCAN_ABORT_UMAC, | |
1457 | IWL_ALWAYS_LONG_GROUP, 0), | |
1458 | 0, sizeof(cmd), &cmd); | |
434f3c1b | 1459 | if (!ret) |
8d14ccd8 | 1460 | mvm->scan_uid_status[uid] = type << IWL_MVM_SCAN_STOPPING_SHIFT; |
434f3c1b LC |
1461 | |
1462 | return ret; | |
d2496221 DS |
1463 | } |
1464 | ||
f2461796 | 1465 | static int iwl_mvm_scan_stop_wait(struct iwl_mvm *mvm, int type) |
d2496221 DS |
1466 | { |
1467 | struct iwl_notification_wait wait_scan_done; | |
6eb031d2 | 1468 | static const u16 scan_done_notif[] = { SCAN_COMPLETE_UMAC, |
f2461796 | 1469 | SCAN_OFFLOAD_COMPLETE, }; |
434f3c1b | 1470 | int ret; |
d2496221 | 1471 | |
f2461796 LC |
1472 | lockdep_assert_held(&mvm->mutex); |
1473 | ||
d2496221 DS |
1474 | iwl_init_notification_wait(&mvm->notif_wait, &wait_scan_done, |
1475 | scan_done_notif, | |
1476 | ARRAY_SIZE(scan_done_notif), | |
434f3c1b | 1477 | NULL, NULL); |
d2496221 DS |
1478 | |
1479 | IWL_DEBUG_SCAN(mvm, "Preparing to stop scan, type %x\n", type); | |
1480 | ||
859d914c | 1481 | if (fw_has_capa(&mvm->fw->ucode_capa, IWL_UCODE_TLV_CAPA_UMAC_SCAN)) |
f2461796 LC |
1482 | ret = iwl_mvm_umac_scan_abort(mvm, type); |
1483 | else | |
1484 | ret = iwl_mvm_lmac_scan_abort(mvm); | |
1485 | ||
d2496221 | 1486 | if (ret) { |
434f3c1b | 1487 | IWL_DEBUG_SCAN(mvm, "couldn't stop scan type %d\n", type); |
d2496221 DS |
1488 | iwl_remove_notification(&mvm->notif_wait, &wait_scan_done); |
1489 | return ret; | |
1490 | } | |
1491 | ||
1492 | ret = iwl_wait_notification(&mvm->notif_wait, &wait_scan_done, 1 * HZ); | |
d2496221 DS |
1493 | |
1494 | return ret; | |
1495 | } | |
1496 | ||
1497 | int iwl_mvm_scan_size(struct iwl_mvm *mvm) | |
1498 | { | |
859d914c | 1499 | if (fw_has_capa(&mvm->fw->ucode_capa, IWL_UCODE_TLV_CAPA_UMAC_SCAN)) |
d2496221 DS |
1500 | return sizeof(struct iwl_scan_req_umac) + |
1501 | sizeof(struct iwl_scan_channel_cfg_umac) * | |
1502 | mvm->fw->ucode_capa.n_scan_channels + | |
1503 | sizeof(struct iwl_scan_req_umac_tail); | |
1504 | ||
65ff556b | 1505 | return sizeof(struct iwl_scan_req_lmac) + |
1f940386 LC |
1506 | sizeof(struct iwl_scan_channel_cfg_lmac) * |
1507 | mvm->fw->ucode_capa.n_scan_channels + | |
1508 | sizeof(struct iwl_scan_probe_req); | |
d2496221 | 1509 | } |
4ffb3650 DS |
1510 | |
1511 | /* | |
1512 | * This function is used in nic restart flow, to inform mac80211 about scans | |
1513 | * that was aborted by restart flow or by an assert. | |
1514 | */ | |
1515 | void iwl_mvm_report_scan_aborted(struct iwl_mvm *mvm) | |
1516 | { | |
859d914c | 1517 | if (fw_has_capa(&mvm->fw->ucode_capa, IWL_UCODE_TLV_CAPA_UMAC_SCAN)) { |
6185af2a | 1518 | int uid, i; |
963221be | 1519 | |
6185af2a LC |
1520 | uid = iwl_mvm_scan_uid_by_status(mvm, IWL_MVM_SCAN_REGULAR); |
1521 | if (uid >= 0) { | |
4ffb3650 | 1522 | ieee80211_scan_completed(mvm->hw, true); |
6185af2a | 1523 | mvm->scan_uid_status[uid] = 0; |
963221be | 1524 | } |
6185af2a LC |
1525 | uid = iwl_mvm_scan_uid_by_status(mvm, IWL_MVM_SCAN_SCHED); |
1526 | if (uid >= 0 && !mvm->restart_fw) { | |
4ffb3650 | 1527 | ieee80211_sched_scan_stopped(mvm->hw); |
6185af2a | 1528 | mvm->scan_uid_status[uid] = 0; |
963221be AB |
1529 | } |
1530 | ||
1531 | /* We shouldn't have any UIDs still set. Loop over all the | |
1532 | * UIDs to make sure there's nothing left there and warn if | |
1533 | * any is found. | |
1534 | */ | |
507e4cda | 1535 | for (i = 0; i < mvm->max_scans; i++) { |
6185af2a LC |
1536 | if (WARN_ONCE(mvm->scan_uid_status[i], |
1537 | "UMAC scan UID %d status was not cleaned\n", | |
1538 | i)) | |
1539 | mvm->scan_uid_status[i] = 0; | |
963221be | 1540 | } |
4ffb3650 | 1541 | } else { |
9af91f46 | 1542 | if (mvm->scan_status & IWL_MVM_SCAN_REGULAR) |
4ffb3650 | 1543 | ieee80211_scan_completed(mvm->hw, true); |
9af91f46 LC |
1544 | |
1545 | /* Sched scan will be restarted by mac80211 in | |
1546 | * restart_hw, so do not report if FW is about to be | |
1547 | * restarted. | |
1548 | */ | |
1549 | if ((mvm->scan_status & IWL_MVM_SCAN_SCHED) && !mvm->restart_fw) | |
1550 | ieee80211_sched_scan_stopped(mvm->hw); | |
4ffb3650 DS |
1551 | } |
1552 | } | |
dfbf156d | 1553 | |
c7d42480 | 1554 | int iwl_mvm_scan_stop(struct iwl_mvm *mvm, int type, bool notify) |
dfbf156d LC |
1555 | { |
1556 | int ret; | |
1557 | ||
c7d42480 | 1558 | if (!(mvm->scan_status & type)) |
dfbf156d LC |
1559 | return 0; |
1560 | ||
1561 | if (iwl_mvm_is_radio_killed(mvm)) { | |
1562 | ret = 0; | |
1563 | goto out; | |
1564 | } | |
1565 | ||
c7d42480 | 1566 | ret = iwl_mvm_scan_stop_wait(mvm, type); |
dfbf156d | 1567 | if (!ret) |
c7d42480 | 1568 | mvm->scan_status |= type << IWL_MVM_SCAN_STOPPING_SHIFT; |
dfbf156d LC |
1569 | out: |
1570 | /* Clear the scan status so the next scan requests will | |
1571 | * succeed and mark the scan as stopping, so that the Rx | |
1572 | * handler doesn't do anything, as the scan was stopped from | |
c7d42480 | 1573 | * above. |
dfbf156d | 1574 | */ |
c7d42480 | 1575 | mvm->scan_status &= ~type; |
dfbf156d | 1576 | |
c7d42480 LC |
1577 | if (type == IWL_MVM_SCAN_REGULAR) { |
1578 | /* Since the rx handler won't do anything now, we have | |
1579 | * to release the scan reference here. | |
1580 | */ | |
1581 | iwl_mvm_unref(mvm, IWL_MVM_REF_SCAN); | |
1582 | if (notify) | |
1583 | ieee80211_scan_completed(mvm->hw, true); | |
1584 | } else if (notify) { | |
dfbf156d | 1585 | ieee80211_sched_scan_stopped(mvm->hw); |
c7d42480 | 1586 | } |
dfbf156d LC |
1587 | |
1588 | return ret; | |
1589 | } |