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8ca151b5 JB |
1 | /****************************************************************************** |
2 | * | |
3 | * This file is provided under a dual BSD/GPLv2 license. When using or | |
4 | * redistributing this file, you may do so under either license. | |
5 | * | |
6 | * GPL LICENSE SUMMARY | |
7 | * | |
51368bf7 | 8 | * Copyright(c) 2012 - 2014 Intel Corporation. All rights reserved. |
9af91f46 | 9 | * Copyright(c) 2013 - 2015 Intel Mobile Communications GmbH |
8ca151b5 JB |
10 | * |
11 | * This program is free software; you can redistribute it and/or modify | |
12 | * it under the terms of version 2 of the GNU General Public License as | |
13 | * published by the Free Software Foundation. | |
14 | * | |
15 | * This program is distributed in the hope that it will be useful, but | |
16 | * WITHOUT ANY WARRANTY; without even the implied warranty of | |
17 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU | |
18 | * General Public License for more details. | |
19 | * | |
20 | * You should have received a copy of the GNU General Public License | |
21 | * along with this program; if not, write to the Free Software | |
22 | * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110, | |
23 | * USA | |
24 | * | |
25 | * The full GNU General Public License is included in this distribution | |
410dc5aa | 26 | * in the file called COPYING. |
8ca151b5 JB |
27 | * |
28 | * Contact Information: | |
29 | * Intel Linux Wireless <ilw@linux.intel.com> | |
30 | * Intel Corporation, 5200 N.E. Elam Young Parkway, Hillsboro, OR 97124-6497 | |
31 | * | |
32 | * BSD LICENSE | |
33 | * | |
51368bf7 | 34 | * Copyright(c) 2012 - 2014 Intel Corporation. All rights reserved. |
9af91f46 | 35 | * Copyright(c) 2013 - 2015 Intel Mobile Communications GmbH |
8ca151b5 JB |
36 | * All rights reserved. |
37 | * | |
38 | * Redistribution and use in source and binary forms, with or without | |
39 | * modification, are permitted provided that the following conditions | |
40 | * are met: | |
41 | * | |
42 | * * Redistributions of source code must retain the above copyright | |
43 | * notice, this list of conditions and the following disclaimer. | |
44 | * * Redistributions in binary form must reproduce the above copyright | |
45 | * notice, this list of conditions and the following disclaimer in | |
46 | * the documentation and/or other materials provided with the | |
47 | * distribution. | |
48 | * * Neither the name Intel Corporation nor the names of its | |
49 | * contributors may be used to endorse or promote products derived | |
50 | * from this software without specific prior written permission. | |
51 | * | |
52 | * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS | |
53 | * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT | |
54 | * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR | |
55 | * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT | |
56 | * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, | |
57 | * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT | |
58 | * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, | |
59 | * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY | |
60 | * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT | |
61 | * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE | |
62 | * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. | |
63 | * | |
64 | *****************************************************************************/ | |
65 | ||
66 | #include <linux/etherdevice.h> | |
67 | #include <net/mac80211.h> | |
68 | ||
69 | #include "mvm.h" | |
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_scan_type { |
76 | IWL_SCAN_TYPE_UNASSOC, | |
77 | IWL_SCAN_TYPE_WILD, | |
78 | IWL_SCAN_TYPE_MILD, | |
79 | IWL_SCAN_TYPE_FRAGMENTED, | |
80 | }; | |
81 | ||
82 | enum iwl_mvm_traffic_load { | |
83 | IWL_MVM_TRAFFIC_LOW, | |
84 | IWL_MVM_TRAFFIC_MEDIUM, | |
85 | IWL_MVM_TRAFFIC_HIGH, | |
86 | }; | |
87 | ||
88 | struct iwl_mvm_scan_timing_params { | |
89 | u32 dwell_active; | |
90 | u32 dwell_passive; | |
91 | u32 dwell_fragmented; | |
8a110d9b | 92 | u32 suspend_time; |
9437e994 DS |
93 | u32 max_out_time; |
94 | }; | |
95 | ||
96 | static struct iwl_mvm_scan_timing_params scan_timing[] = { | |
97 | [IWL_SCAN_TYPE_UNASSOC] = { | |
98 | .dwell_active = 10, | |
99 | .dwell_passive = 110, | |
100 | .dwell_fragmented = 44, | |
101 | .suspend_time = 0, | |
102 | .max_out_time = 0, | |
103 | }, | |
104 | [IWL_SCAN_TYPE_WILD] = { | |
105 | .dwell_active = 10, | |
106 | .dwell_passive = 110, | |
107 | .dwell_fragmented = 44, | |
108 | .suspend_time = 30, | |
109 | .max_out_time = 120, | |
110 | }, | |
111 | [IWL_SCAN_TYPE_MILD] = { | |
112 | .dwell_active = 10, | |
113 | .dwell_passive = 110, | |
114 | .dwell_fragmented = 44, | |
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; | |
134 | u16 interval; /* interval between scans (in secs) */ | |
135 | u32 flags; | |
136 | u8 *mac_addr; | |
137 | u8 *mac_addr_mask; | |
138 | bool no_cck; | |
139 | bool pass_all; | |
140 | int n_match_sets; | |
45d1b12e | 141 | struct iwl_scan_probe_req preq; |
f7b788b4 | 142 | struct cfg80211_match_set *match_sets; |
3b44a0ef | 143 | u8 iterations[2]; |
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 | ||
fb98be5e | 166 | static __le32 iwl_mvm_scan_rxon_flags(enum ieee80211_band band) |
8ca151b5 | 167 | { |
fb98be5e | 168 | if (band == IEEE80211_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 | |
175 | iwl_mvm_scan_rate_n_flags(struct iwl_mvm *mvm, enum ieee80211_band band, | |
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 | ||
185 | if (band == IEEE80211_BAND_2GHZ && !no_cck) | |
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 | |
209 | iwl_mvm_scan_type iwl_mvm_get_scan_type(struct iwl_mvm *mvm, | |
210 | struct ieee80211_vif *vif, | |
211 | struct iwl_mvm_scan_params *params) | |
8a110d9b | 212 | { |
c3f8d0a3 | 213 | int global_cnt = 0; |
9437e994 DS |
214 | enum iwl_mvm_traffic_load load; |
215 | bool low_latency; | |
8a110d9b AB |
216 | |
217 | ieee80211_iterate_active_interfaces_atomic(mvm->hw, | |
218 | IEEE80211_IFACE_ITER_NORMAL, | |
219 | iwl_mvm_scan_condition_iterator, | |
c3f8d0a3 | 220 | &global_cnt); |
c3f8d0a3 | 221 | if (!global_cnt) |
9437e994 | 222 | return IWL_SCAN_TYPE_UNASSOC; |
ef67f18d | 223 | |
9437e994 DS |
224 | load = iwl_mvm_get_traffic_load(mvm); |
225 | low_latency = iwl_mvm_low_latency(mvm); | |
6bcb00f6 | 226 | |
9437e994 DS |
227 | if ((load == IWL_MVM_TRAFFIC_HIGH || low_latency) && |
228 | vif->type != NL80211_IFTYPE_P2P_DEVICE && | |
229 | fw_has_api(&mvm->fw->ucode_capa, IWL_UCODE_TLV_API_FRAGMENTED_SCAN)) | |
230 | return IWL_SCAN_TYPE_FRAGMENTED; | |
190f1029 | 231 | |
9437e994 DS |
232 | if (load >= IWL_MVM_TRAFFIC_MEDIUM || low_latency) |
233 | return IWL_SCAN_TYPE_MILD; | |
0616c62c | 234 | |
9437e994 | 235 | return IWL_SCAN_TYPE_WILD; |
61f6325d HD |
236 | } |
237 | ||
73897bd1 AO |
238 | static inline bool iwl_mvm_rrm_scan_needed(struct iwl_mvm *mvm) |
239 | { | |
240 | /* require rrm scan whenever the fw supports it */ | |
859d914c JB |
241 | return fw_has_capa(&mvm->fw->ucode_capa, |
242 | IWL_UCODE_TLV_CAPA_DS_PARAM_SET_IE_SUPPORT); | |
73897bd1 AO |
243 | } |
244 | ||
999d2568 | 245 | static int iwl_mvm_max_scan_ie_fw_cmd_room(struct iwl_mvm *mvm) |
48849a41 AO |
246 | { |
247 | int max_probe_len; | |
248 | ||
1f940386 | 249 | max_probe_len = SCAN_OFFLOAD_PROBE_REQ_SIZE; |
48849a41 AO |
250 | |
251 | /* we create the 802.11 header and SSID element */ | |
252 | max_probe_len -= 24 + 2; | |
253 | ||
66dc5272 AO |
254 | /* DS parameter set element is added on 2.4GHZ band if required */ |
255 | if (iwl_mvm_rrm_scan_needed(mvm)) | |
256 | max_probe_len -= 3; | |
257 | ||
48849a41 AO |
258 | return max_probe_len; |
259 | } | |
260 | ||
999d2568 | 261 | int iwl_mvm_max_scan_ie_len(struct iwl_mvm *mvm) |
48849a41 | 262 | { |
999d2568 | 263 | int max_ie_len = iwl_mvm_max_scan_ie_fw_cmd_room(mvm); |
48849a41 | 264 | |
48849a41 AO |
265 | /* TODO: [BUG] This function should return the maximum allowed size of |
266 | * scan IEs, however the LMAC scan api contains both 2GHZ and 5GHZ IEs | |
267 | * in the same command. So the correct implementation of this function | |
268 | * is just iwl_mvm_max_scan_ie_fw_cmd_room() / 2. Currently the scan | |
269 | * command has only 512 bytes and it would leave us with about 240 | |
270 | * bytes for scan IEs, which is clearly not enough. So meanwhile | |
271 | * we will report an incorrect value. This may result in a failure to | |
272 | * issue a scan in unified_scan_lmac and unified_sched_scan_lmac | |
273 | * functions with -ENOBUFS, if a large enough probe will be provided. | |
274 | */ | |
275 | return max_ie_len; | |
276 | } | |
277 | ||
1fa1bcc0 AS |
278 | static u8 *iwl_mvm_dump_channel_list(struct iwl_scan_results_notif *res, |
279 | int num_res, u8 *buf, size_t buf_size) | |
280 | { | |
281 | int i; | |
282 | u8 *pos = buf, *end = buf + buf_size; | |
283 | ||
284 | for (i = 0; pos < end && i < num_res; i++) | |
285 | pos += snprintf(pos, end - pos, " %u", res[i].channel); | |
286 | ||
287 | /* terminate the string in case the buffer was too short */ | |
288 | *(buf + buf_size - 1) = '\0'; | |
289 | ||
290 | return buf; | |
291 | } | |
292 | ||
0416841d JB |
293 | void iwl_mvm_rx_lmac_scan_iter_complete_notif(struct iwl_mvm *mvm, |
294 | struct iwl_rx_cmd_buffer *rxb) | |
e5d74646 AB |
295 | { |
296 | struct iwl_rx_packet *pkt = rxb_addr(rxb); | |
1083fd73 | 297 | struct iwl_lmac_scan_complete_notif *notif = (void *)pkt->data; |
1fa1bcc0 | 298 | u8 buf[256]; |
e5d74646 AB |
299 | |
300 | IWL_DEBUG_SCAN(mvm, | |
1fa1bcc0 AS |
301 | "Scan offload iteration complete: status=0x%x scanned channels=%d channels list: %s\n", |
302 | notif->status, notif->scanned_channels, | |
303 | iwl_mvm_dump_channel_list(notif->results, | |
304 | notif->scanned_channels, buf, | |
305 | sizeof(buf))); | |
e5d74646 AB |
306 | } |
307 | ||
0416841d JB |
308 | void iwl_mvm_rx_scan_match_found(struct iwl_mvm *mvm, |
309 | struct iwl_rx_cmd_buffer *rxb) | |
35a000b7 | 310 | { |
d2496221 DS |
311 | IWL_DEBUG_SCAN(mvm, "Scheduled scan results\n"); |
312 | ieee80211_sched_scan_results(mvm->hw); | |
35a000b7 DS |
313 | } |
314 | ||
f0bf8593 DS |
315 | static const char *iwl_mvm_ebs_status_str(enum iwl_scan_ebs_status status) |
316 | { | |
317 | switch (status) { | |
318 | case IWL_SCAN_EBS_SUCCESS: | |
319 | return "successful"; | |
320 | case IWL_SCAN_EBS_INACTIVE: | |
321 | return "inactive"; | |
322 | case IWL_SCAN_EBS_FAILED: | |
323 | case IWL_SCAN_EBS_CHAN_NOT_FOUND: | |
324 | default: | |
325 | return "failed"; | |
326 | } | |
327 | } | |
328 | ||
0416841d JB |
329 | void iwl_mvm_rx_lmac_scan_complete_notif(struct iwl_mvm *mvm, |
330 | struct iwl_rx_cmd_buffer *rxb) | |
35a000b7 DS |
331 | { |
332 | struct iwl_rx_packet *pkt = rxb_addr(rxb); | |
9af91f46 LC |
333 | struct iwl_periodic_scan_complete *scan_notif = (void *)pkt->data; |
334 | bool aborted = (scan_notif->status == IWL_SCAN_OFFLOAD_ABORTED); | |
fb98be5e | 335 | |
a6623e84 JB |
336 | /* scan status must be locked for proper checking */ |
337 | lockdep_assert_held(&mvm->mutex); | |
338 | ||
9af91f46 LC |
339 | /* We first check if we were stopping a scan, in which case we |
340 | * just clear the stopping flag. Then we check if it was a | |
341 | * firmware initiated stop, in which case we need to inform | |
342 | * mac80211. | |
343 | * Note that we can have a stopping and a running scan | |
344 | * simultaneously, but we can't have two different types of | |
345 | * scans stopping or running at the same time (since LMAC | |
346 | * doesn't support it). | |
347 | */ | |
348 | ||
349 | if (mvm->scan_status & IWL_MVM_SCAN_STOPPING_SCHED) { | |
350 | WARN_ON_ONCE(mvm->scan_status & IWL_MVM_SCAN_STOPPING_REGULAR); | |
351 | ||
a7b3bc91 | 352 | IWL_DEBUG_SCAN(mvm, "Scheduled scan %s, EBS status %s\n", |
9af91f46 | 353 | aborted ? "aborted" : "completed", |
a7b3bc91 AB |
354 | iwl_mvm_ebs_status_str(scan_notif->ebs_status)); |
355 | IWL_DEBUG_SCAN(mvm, | |
356 | "Last line %d, Last iteration %d, Time after last iteration %d\n", | |
1a84e771 AB |
357 | scan_notif->last_schedule_line, |
358 | scan_notif->last_schedule_iteration, | |
359 | __le32_to_cpu(scan_notif->time_after_last_iter)); | |
e820c2da | 360 | |
9af91f46 LC |
361 | mvm->scan_status &= ~IWL_MVM_SCAN_STOPPING_SCHED; |
362 | } else if (mvm->scan_status & IWL_MVM_SCAN_STOPPING_REGULAR) { | |
363 | IWL_DEBUG_SCAN(mvm, "Regular scan %s, EBS status %s\n", | |
364 | aborted ? "aborted" : "completed", | |
f0bf8593 | 365 | iwl_mvm_ebs_status_str(scan_notif->ebs_status)); |
35a000b7 | 366 | |
9af91f46 LC |
367 | mvm->scan_status &= ~IWL_MVM_SCAN_STOPPING_REGULAR; |
368 | } else if (mvm->scan_status & IWL_MVM_SCAN_SCHED) { | |
369 | WARN_ON_ONCE(mvm->scan_status & IWL_MVM_SCAN_REGULAR); | |
370 | ||
a7b3bc91 | 371 | IWL_DEBUG_SCAN(mvm, "Scheduled scan %s, EBS status %s\n", |
9af91f46 | 372 | aborted ? "aborted" : "completed", |
a7b3bc91 AB |
373 | iwl_mvm_ebs_status_str(scan_notif->ebs_status)); |
374 | IWL_DEBUG_SCAN(mvm, | |
375 | "Last line %d, Last iteration %d, Time after last iteration %d (FW)\n", | |
1a84e771 AB |
376 | scan_notif->last_schedule_line, |
377 | scan_notif->last_schedule_iteration, | |
378 | __le32_to_cpu(scan_notif->time_after_last_iter)); | |
9af91f46 LC |
379 | |
380 | mvm->scan_status &= ~IWL_MVM_SCAN_SCHED; | |
33ea27f6 | 381 | ieee80211_sched_scan_stopped(mvm->hw); |
9af91f46 LC |
382 | } else if (mvm->scan_status & IWL_MVM_SCAN_REGULAR) { |
383 | IWL_DEBUG_SCAN(mvm, "Regular scan %s, EBS status %s (FW)\n", | |
384 | aborted ? "aborted" : "completed", | |
f0bf8593 | 385 | iwl_mvm_ebs_status_str(scan_notif->ebs_status)); |
9af91f46 LC |
386 | |
387 | mvm->scan_status &= ~IWL_MVM_SCAN_REGULAR; | |
fb98be5e | 388 | ieee80211_scan_completed(mvm->hw, |
1f940386 | 389 | scan_notif->status == IWL_SCAN_OFFLOAD_ABORTED); |
4ff78181 | 390 | iwl_mvm_unref(mvm, IWL_MVM_REF_SCAN); |
33ea27f6 | 391 | } |
35a000b7 | 392 | |
f0bf8593 DS |
393 | mvm->last_ebs_successful = |
394 | scan_notif->ebs_status == IWL_SCAN_EBS_SUCCESS || | |
395 | scan_notif->ebs_status == IWL_SCAN_EBS_INACTIVE; | |
35a000b7 DS |
396 | } |
397 | ||
35a000b7 DS |
398 | static int iwl_ssid_exist(u8 *ssid, u8 ssid_len, struct iwl_ssid_ie *ssid_list) |
399 | { | |
400 | int i; | |
401 | ||
402 | for (i = 0; i < PROBE_OPTION_MAX; i++) { | |
403 | if (!ssid_list[i].len) | |
404 | break; | |
405 | if (ssid_list[i].len == ssid_len && | |
406 | !memcmp(ssid_list->ssid, ssid, ssid_len)) | |
407 | return i; | |
408 | } | |
409 | return -1; | |
410 | } | |
411 | ||
e2ec4f6d LC |
412 | /* We insert the SSIDs in an inverted order, because the FW will |
413 | * invert it back. | |
414 | */ | |
415 | static void iwl_scan_build_ssids(struct iwl_mvm_scan_params *params, | |
416 | struct iwl_ssid_ie *ssids, | |
417 | u32 *ssid_bitmap) | |
35a000b7 DS |
418 | { |
419 | int i, j; | |
420 | int index; | |
421 | ||
422 | /* | |
423 | * copy SSIDs from match list. | |
424 | * iwl_config_sched_scan_profiles() uses the order of these ssids to | |
425 | * config match list. | |
426 | */ | |
1c1b5b26 LC |
427 | for (i = 0, j = params->n_match_sets - 1; |
428 | j >= 0 && i < PROBE_OPTION_MAX; | |
429 | i++, j--) { | |
ea73cbce | 430 | /* skip empty SSID matchsets */ |
1c1b5b26 | 431 | if (!params->match_sets[j].ssid.ssid_len) |
ea73cbce | 432 | continue; |
e2ec4f6d LC |
433 | ssids[i].id = WLAN_EID_SSID; |
434 | ssids[i].len = params->match_sets[j].ssid.ssid_len; | |
435 | memcpy(ssids[i].ssid, params->match_sets[j].ssid.ssid, | |
436 | ssids[i].len); | |
35a000b7 DS |
437 | } |
438 | ||
439 | /* add SSIDs from scan SSID list */ | |
440 | *ssid_bitmap = 0; | |
1c1b5b26 LC |
441 | for (j = params->n_ssids - 1; |
442 | j >= 0 && i < PROBE_OPTION_MAX; | |
443 | i++, j--) { | |
f7b788b4 LC |
444 | index = iwl_ssid_exist(params->ssids[j].ssid, |
445 | params->ssids[j].ssid_len, | |
e2ec4f6d | 446 | ssids); |
35a000b7 | 447 | if (index < 0) { |
e2ec4f6d LC |
448 | ssids[i].id = WLAN_EID_SSID; |
449 | ssids[i].len = params->ssids[j].ssid_len; | |
450 | memcpy(ssids[i].ssid, params->ssids[j].ssid, | |
451 | ssids[i].len); | |
452 | *ssid_bitmap |= BIT(i); | |
35a000b7 | 453 | } else { |
e2ec4f6d | 454 | *ssid_bitmap |= BIT(index); |
35a000b7 DS |
455 | } |
456 | } | |
457 | } | |
458 | ||
416c9b50 LC |
459 | static int |
460 | iwl_mvm_config_sched_scan_profiles(struct iwl_mvm *mvm, | |
461 | struct cfg80211_sched_scan_request *req) | |
35a000b7 DS |
462 | { |
463 | struct iwl_scan_offload_profile *profile; | |
464 | struct iwl_scan_offload_profile_cfg *profile_cfg; | |
465 | struct iwl_scan_offload_blacklist *blacklist; | |
466 | struct iwl_host_cmd cmd = { | |
467 | .id = SCAN_OFFLOAD_UPDATE_PROFILES_CMD, | |
35a000b7 DS |
468 | .len[1] = sizeof(*profile_cfg), |
469 | .dataflags[0] = IWL_HCMD_DFL_NOCOPY, | |
470 | .dataflags[1] = IWL_HCMD_DFL_NOCOPY, | |
471 | }; | |
472 | int blacklist_len; | |
473 | int i; | |
474 | int ret; | |
475 | ||
476 | if (WARN_ON(req->n_match_sets > IWL_SCAN_MAX_PROFILES)) | |
477 | return -EIO; | |
478 | ||
479 | if (mvm->fw->ucode_capa.flags & IWL_UCODE_TLV_FLAGS_SHORT_BL) | |
480 | blacklist_len = IWL_SCAN_SHORT_BLACKLIST_LEN; | |
481 | else | |
482 | blacklist_len = IWL_SCAN_MAX_BLACKLIST_LEN; | |
483 | ||
484 | blacklist = kzalloc(sizeof(*blacklist) * blacklist_len, GFP_KERNEL); | |
485 | if (!blacklist) | |
486 | return -ENOMEM; | |
487 | ||
488 | profile_cfg = kzalloc(sizeof(*profile_cfg), GFP_KERNEL); | |
489 | if (!profile_cfg) { | |
490 | ret = -ENOMEM; | |
491 | goto free_blacklist; | |
492 | } | |
493 | ||
494 | cmd.data[0] = blacklist; | |
495 | cmd.len[0] = sizeof(*blacklist) * blacklist_len; | |
496 | cmd.data[1] = profile_cfg; | |
497 | ||
498 | /* No blacklist configuration */ | |
499 | ||
500 | profile_cfg->num_profiles = req->n_match_sets; | |
501 | profile_cfg->active_clients = SCAN_CLIENT_SCHED_SCAN; | |
502 | profile_cfg->pass_match = SCAN_CLIENT_SCHED_SCAN; | |
503 | profile_cfg->match_notify = SCAN_CLIENT_SCHED_SCAN; | |
6e0bbe5e DS |
504 | if (!req->n_match_sets || !req->match_sets[0].ssid.ssid_len) |
505 | profile_cfg->any_beacon_notify = SCAN_CLIENT_SCHED_SCAN; | |
35a000b7 DS |
506 | |
507 | for (i = 0; i < req->n_match_sets; i++) { | |
508 | profile = &profile_cfg->profiles[i]; | |
509 | profile->ssid_index = i; | |
510 | /* Support any cipher and auth algorithm */ | |
511 | profile->unicast_cipher = 0xff; | |
512 | profile->auth_alg = 0xff; | |
513 | profile->network_type = IWL_NETWORK_TYPE_ANY; | |
514 | profile->band_selection = IWL_SCAN_OFFLOAD_SELECT_ANY; | |
515 | profile->client_bitmap = SCAN_CLIENT_SCHED_SCAN; | |
516 | } | |
517 | ||
518 | IWL_DEBUG_SCAN(mvm, "Sending scheduled scan profile config\n"); | |
519 | ||
520 | ret = iwl_mvm_send_cmd(mvm, &cmd); | |
521 | kfree(profile_cfg); | |
522 | free_blacklist: | |
523 | kfree(blacklist); | |
524 | ||
525 | return ret; | |
526 | } | |
527 | ||
d2496221 DS |
528 | static bool iwl_mvm_scan_pass_all(struct iwl_mvm *mvm, |
529 | struct cfg80211_sched_scan_request *req) | |
530 | { | |
531 | if (req->n_match_sets && req->match_sets[0].ssid.ssid_len) { | |
532 | IWL_DEBUG_SCAN(mvm, | |
533 | "Sending scheduled scan with filtering, n_match_sets %d\n", | |
534 | req->n_match_sets); | |
535 | return false; | |
536 | } | |
537 | ||
538 | IWL_DEBUG_SCAN(mvm, "Sending Scheduled scan without filtering\n"); | |
539 | return true; | |
540 | } | |
541 | ||
f2461796 | 542 | static int iwl_mvm_lmac_scan_abort(struct iwl_mvm *mvm) |
35a000b7 DS |
543 | { |
544 | int ret; | |
545 | struct iwl_host_cmd cmd = { | |
546 | .id = SCAN_OFFLOAD_ABORT_CMD, | |
35a000b7 DS |
547 | }; |
548 | u32 status; | |
549 | ||
35a000b7 DS |
550 | ret = iwl_mvm_send_cmd_status(mvm, &cmd, &status); |
551 | if (ret) | |
552 | return ret; | |
553 | ||
554 | if (status != CAN_ABORT_STATUS) { | |
555 | /* | |
556 | * The scan abort will return 1 for success or | |
557 | * 2 for "failure". A failure condition can be | |
558 | * due to simply not being in an active scan which | |
559 | * can occur if we send the scan abort before the | |
560 | * microcode has notified us that a scan is completed. | |
561 | */ | |
562 | IWL_DEBUG_SCAN(mvm, "SCAN OFFLOAD ABORT ret %d.\n", status); | |
33ea27f6 | 563 | ret = -ENOENT; |
35a000b7 DS |
564 | } |
565 | ||
566 | return ret; | |
567 | } | |
568 | ||
65ff556b LC |
569 | static void iwl_mvm_scan_fill_tx_cmd(struct iwl_mvm *mvm, |
570 | struct iwl_scan_req_tx_cmd *tx_cmd, | |
571 | bool no_cck) | |
fb98be5e DS |
572 | { |
573 | tx_cmd[0].tx_flags = cpu_to_le32(TX_CMD_FLG_SEQ_CTL | | |
574 | TX_CMD_FLG_BT_DIS); | |
575 | tx_cmd[0].rate_n_flags = iwl_mvm_scan_rate_n_flags(mvm, | |
576 | IEEE80211_BAND_2GHZ, | |
577 | no_cck); | |
578 | tx_cmd[0].sta_id = mvm->aux_sta.sta_id; | |
579 | ||
580 | tx_cmd[1].tx_flags = cpu_to_le32(TX_CMD_FLG_SEQ_CTL | | |
581 | TX_CMD_FLG_BT_DIS); | |
582 | tx_cmd[1].rate_n_flags = iwl_mvm_scan_rate_n_flags(mvm, | |
583 | IEEE80211_BAND_5GHZ, | |
584 | no_cck); | |
585 | tx_cmd[1].sta_id = mvm->aux_sta.sta_id; | |
586 | } | |
587 | ||
588 | static void | |
589 | iwl_mvm_lmac_scan_cfg_channels(struct iwl_mvm *mvm, | |
590 | struct ieee80211_channel **channels, | |
591 | int n_channels, u32 ssid_bitmap, | |
65ff556b | 592 | struct iwl_scan_req_lmac *cmd) |
fb98be5e DS |
593 | { |
594 | struct iwl_scan_channel_cfg_lmac *channel_cfg = (void *)&cmd->data; | |
595 | int i; | |
596 | ||
597 | for (i = 0; i < n_channels; i++) { | |
598 | channel_cfg[i].channel_num = | |
599 | cpu_to_le16(channels[i]->hw_value); | |
600 | channel_cfg[i].iter_count = cpu_to_le16(1); | |
601 | channel_cfg[i].iter_interval = 0; | |
602 | channel_cfg[i].flags = | |
603 | cpu_to_le32(IWL_UNIFIED_SCAN_CHANNEL_PARTIAL | | |
604 | ssid_bitmap); | |
605 | } | |
606 | } | |
607 | ||
66dc5272 AO |
608 | static u8 *iwl_mvm_copy_and_insert_ds_elem(struct iwl_mvm *mvm, const u8 *ies, |
609 | size_t len, u8 *const pos) | |
610 | { | |
611 | static const u8 before_ds_params[] = { | |
612 | WLAN_EID_SSID, | |
613 | WLAN_EID_SUPP_RATES, | |
614 | WLAN_EID_REQUEST, | |
615 | WLAN_EID_EXT_SUPP_RATES, | |
616 | }; | |
617 | size_t offs; | |
618 | u8 *newpos = pos; | |
619 | ||
620 | if (!iwl_mvm_rrm_scan_needed(mvm)) { | |
621 | memcpy(newpos, ies, len); | |
622 | return newpos + len; | |
623 | } | |
624 | ||
625 | offs = ieee80211_ie_split(ies, len, | |
626 | before_ds_params, | |
627 | ARRAY_SIZE(before_ds_params), | |
628 | 0); | |
629 | ||
630 | memcpy(newpos, ies, offs); | |
631 | newpos += offs; | |
632 | ||
633 | /* Add a placeholder for DS Parameter Set element */ | |
634 | *newpos++ = WLAN_EID_DS_PARAMS; | |
635 | *newpos++ = 1; | |
636 | *newpos++ = 0; | |
637 | ||
638 | memcpy(newpos, ies + offs, len - offs); | |
639 | newpos += len - offs; | |
640 | ||
641 | return newpos; | |
642 | } | |
643 | ||
fb98be5e | 644 | static void |
65ff556b LC |
645 | iwl_mvm_build_scan_probe(struct iwl_mvm *mvm, struct ieee80211_vif *vif, |
646 | struct ieee80211_scan_ies *ies, | |
45d1b12e | 647 | struct iwl_mvm_scan_params *params) |
fb98be5e | 648 | { |
45d1b12e | 649 | struct ieee80211_mgmt *frame = (void *)params->preq.buf; |
66dc5272 | 650 | u8 *pos, *newpos; |
45d1b12e LC |
651 | const u8 *mac_addr = params->flags & NL80211_SCAN_FLAG_RANDOM_ADDR ? |
652 | params->mac_addr : NULL; | |
fb98be5e | 653 | |
effd05ac JB |
654 | /* |
655 | * Unfortunately, right now the offload scan doesn't support randomising | |
656 | * within the firmware, so until the firmware API is ready we implement | |
657 | * it in the driver. This means that the scan iterations won't really be | |
658 | * random, only when it's restarted, but at least that helps a bit. | |
659 | */ | |
660 | if (mac_addr) | |
45d1b12e LC |
661 | get_random_mask_addr(frame->sa, mac_addr, |
662 | params->mac_addr_mask); | |
effd05ac JB |
663 | else |
664 | memcpy(frame->sa, vif->addr, ETH_ALEN); | |
665 | ||
fb98be5e DS |
666 | frame->frame_control = cpu_to_le16(IEEE80211_STYPE_PROBE_REQ); |
667 | eth_broadcast_addr(frame->da); | |
fb98be5e DS |
668 | eth_broadcast_addr(frame->bssid); |
669 | frame->seq_ctrl = 0; | |
670 | ||
671 | pos = frame->u.probe_req.variable; | |
672 | *pos++ = WLAN_EID_SSID; | |
673 | *pos++ = 0; | |
674 | ||
45d1b12e LC |
675 | params->preq.mac_header.offset = 0; |
676 | params->preq.mac_header.len = cpu_to_le16(24 + 2); | |
fb98be5e | 677 | |
66dc5272 AO |
678 | /* Insert ds parameter set element on 2.4 GHz band */ |
679 | newpos = iwl_mvm_copy_and_insert_ds_elem(mvm, | |
680 | ies->ies[IEEE80211_BAND_2GHZ], | |
681 | ies->len[IEEE80211_BAND_2GHZ], | |
682 | pos); | |
45d1b12e LC |
683 | params->preq.band_data[0].offset = cpu_to_le16(pos - params->preq.buf); |
684 | params->preq.band_data[0].len = cpu_to_le16(newpos - pos); | |
66dc5272 | 685 | pos = newpos; |
fb98be5e DS |
686 | |
687 | memcpy(pos, ies->ies[IEEE80211_BAND_5GHZ], | |
688 | ies->len[IEEE80211_BAND_5GHZ]); | |
45d1b12e LC |
689 | params->preq.band_data[1].offset = cpu_to_le16(pos - params->preq.buf); |
690 | params->preq.band_data[1].len = | |
691 | cpu_to_le16(ies->len[IEEE80211_BAND_5GHZ]); | |
fb98be5e DS |
692 | pos += ies->len[IEEE80211_BAND_5GHZ]; |
693 | ||
694 | memcpy(pos, ies->common_ies, ies->common_ie_len); | |
45d1b12e LC |
695 | params->preq.common_data.offset = cpu_to_le16(pos - params->preq.buf); |
696 | params->preq.common_data.len = cpu_to_le16(ies->common_ie_len); | |
fb98be5e DS |
697 | } |
698 | ||
d7afbfc4 AS |
699 | static __le32 iwl_mvm_scan_priority(struct iwl_mvm *mvm, |
700 | enum iwl_scan_priority_ext prio) | |
701 | { | |
859d914c JB |
702 | if (fw_has_api(&mvm->fw->ucode_capa, |
703 | IWL_UCODE_TLV_API_EXT_SCAN_PRIORITY)) | |
d7afbfc4 AS |
704 | return cpu_to_le32(prio); |
705 | ||
706 | if (prio <= IWL_SCAN_PRIORITY_EXT_2) | |
707 | return cpu_to_le32(IWL_SCAN_PRIORITY_LOW); | |
708 | ||
709 | if (prio <= IWL_SCAN_PRIORITY_EXT_4) | |
710 | return cpu_to_le32(IWL_SCAN_PRIORITY_MEDIUM); | |
711 | ||
712 | return cpu_to_le32(IWL_SCAN_PRIORITY_HIGH); | |
713 | } | |
714 | ||
133c8259 LC |
715 | static void iwl_mvm_scan_lmac_dwell(struct iwl_mvm *mvm, |
716 | struct iwl_scan_req_lmac *cmd, | |
717 | struct iwl_mvm_scan_params *params) | |
fb98be5e | 718 | { |
9437e994 DS |
719 | cmd->active_dwell = scan_timing[params->type].dwell_active; |
720 | cmd->passive_dwell = scan_timing[params->type].dwell_passive; | |
721 | cmd->fragmented_dwell = scan_timing[params->type].dwell_fragmented; | |
722 | cmd->max_out_time = cpu_to_le32(scan_timing[params->type].max_out_time); | |
723 | cmd->suspend_time = cpu_to_le32(scan_timing[params->type].suspend_time); | |
d7afbfc4 | 724 | cmd->scan_prio = iwl_mvm_scan_priority(mvm, IWL_SCAN_PRIORITY_EXT_6); |
fb98be5e DS |
725 | } |
726 | ||
999d2568 LC |
727 | static inline bool iwl_mvm_scan_fits(struct iwl_mvm *mvm, int n_ssids, |
728 | struct ieee80211_scan_ies *ies, | |
729 | int n_channels) | |
730 | { | |
731 | return ((n_ssids <= PROBE_OPTION_MAX) && | |
732 | (n_channels <= mvm->fw->ucode_capa.n_scan_channels) & | |
733 | (ies->common_ie_len + | |
734 | ies->len[NL80211_BAND_2GHZ] + | |
735 | ies->len[NL80211_BAND_5GHZ] <= | |
736 | iwl_mvm_max_scan_ie_fw_cmd_room(mvm))); | |
737 | } | |
738 | ||
15286e26 DS |
739 | static inline bool iwl_mvm_scan_use_ebs(struct iwl_mvm *mvm, |
740 | struct ieee80211_vif *vif, | |
741 | int n_iterations) | |
fb98be5e | 742 | { |
7d7de1e9 | 743 | const struct iwl_ucode_capabilities *capa = &mvm->fw->ucode_capa; |
fb98be5e | 744 | |
7d7de1e9 LC |
745 | /* We can only use EBS if: |
746 | * 1. the feature is supported; | |
747 | * 2. the last EBS was successful; | |
15286e26 DS |
748 | * 3. if only single scan, the single scan EBS API is supported; |
749 | * 4. it's not a p2p find operation. | |
7d7de1e9 LC |
750 | */ |
751 | return ((capa->flags & IWL_UCODE_TLV_FLAGS_EBS_SUPPORT) && | |
752 | mvm->last_ebs_successful && | |
15286e26 | 753 | vif->type != NL80211_IFTYPE_P2P_DEVICE); |
fb98be5e DS |
754 | } |
755 | ||
6f4dcc76 LC |
756 | static int iwl_mvm_scan_total_iterations(struct iwl_mvm_scan_params *params) |
757 | { | |
3b44a0ef | 758 | return params->iterations[0] + params->iterations[1]; |
6f4dcc76 LC |
759 | } |
760 | ||
87515408 LC |
761 | static int iwl_mvm_scan_lmac_flags(struct iwl_mvm *mvm, |
762 | struct iwl_mvm_scan_params *params) | |
763 | { | |
764 | int flags = 0; | |
765 | ||
766 | if (params->n_ssids == 0) | |
767 | flags |= IWL_MVM_LMAC_SCAN_FLAG_PASSIVE; | |
768 | ||
769 | if (params->n_ssids == 1 && params->ssids[0].ssid_len != 0) | |
770 | flags |= IWL_MVM_LMAC_SCAN_FLAG_PRE_CONNECTION; | |
771 | ||
9437e994 | 772 | if (params->type == IWL_SCAN_TYPE_FRAGMENTED) |
87515408 LC |
773 | flags |= IWL_MVM_LMAC_SCAN_FLAG_FRAGMENTED; |
774 | ||
775 | if (iwl_mvm_rrm_scan_needed(mvm)) | |
776 | flags |= IWL_MVM_LMAC_SCAN_FLAGS_RRM_ENABLED; | |
777 | ||
778 | if (params->pass_all) | |
779 | flags |= IWL_MVM_LMAC_SCAN_FLAG_PASS_ALL; | |
780 | else | |
781 | flags |= IWL_MVM_LMAC_SCAN_FLAG_MATCH; | |
782 | ||
783 | #ifdef CONFIG_IWLWIFI_DEBUGFS | |
784 | if (mvm->scan_iter_notif_enabled) | |
785 | flags |= IWL_MVM_LMAC_SCAN_FLAG_ITER_COMPLETE; | |
786 | #endif | |
787 | ||
788 | return flags; | |
789 | } | |
790 | ||
7d7de1e9 LC |
791 | static int iwl_mvm_scan_lmac(struct iwl_mvm *mvm, struct ieee80211_vif *vif, |
792 | struct iwl_mvm_scan_params *params) | |
fb98be5e | 793 | { |
65ff556b | 794 | struct iwl_scan_req_lmac *cmd = mvm->scan_cmd; |
45d1b12e LC |
795 | struct iwl_scan_probe_req *preq = |
796 | (void *)(cmd->data + sizeof(struct iwl_scan_channel_cfg_lmac) * | |
797 | mvm->fw->ucode_capa.n_scan_channels); | |
87515408 | 798 | u32 ssid_bitmap = 0; |
6f4dcc76 | 799 | int n_iterations = iwl_mvm_scan_total_iterations(params); |
fb98be5e DS |
800 | |
801 | lockdep_assert_held(&mvm->mutex); | |
802 | ||
133c8259 LC |
803 | memset(cmd, 0, ksize(cmd)); |
804 | ||
805 | iwl_mvm_scan_lmac_dwell(mvm, cmd, params); | |
fb98be5e | 806 | |
133c8259 LC |
807 | cmd->rx_chain_select = iwl_mvm_scan_rx_chain(mvm); |
808 | cmd->iter_num = cpu_to_le32(1); | |
f7b788b4 | 809 | cmd->n_channels = (u8)params->n_channels; |
fb98be5e | 810 | |
f7b788b4 | 811 | cmd->delay = cpu_to_le32(params->delay); |
2250fd94 | 812 | |
87515408 | 813 | cmd->scan_flags = cpu_to_le32(iwl_mvm_scan_lmac_flags(mvm, params)); |
fb98be5e | 814 | |
f7b788b4 | 815 | cmd->flags = iwl_mvm_scan_rxon_flags(params->channels[0]->band); |
fb98be5e DS |
816 | cmd->filter_flags = cpu_to_le32(MAC_FILTER_ACCEPT_GRP | |
817 | MAC_FILTER_IN_BEACON); | |
f7b788b4 | 818 | iwl_mvm_scan_fill_tx_cmd(mvm, cmd->tx_cmd, params->no_cck); |
e2ec4f6d LC |
819 | iwl_scan_build_ssids(params, cmd->direct_scan, &ssid_bitmap); |
820 | ||
821 | /* this API uses bits 1-20 instead of 0-19 */ | |
822 | ssid_bitmap <<= 1; | |
fb98be5e | 823 | |
f7b788b4 | 824 | cmd->schedule[0].delay = cpu_to_le16(params->interval); |
3b44a0ef DS |
825 | cmd->schedule[0].iterations = params->iterations[0]; |
826 | cmd->schedule[0].full_scan_mul = 1; | |
f7b788b4 | 827 | cmd->schedule[1].delay = cpu_to_le16(params->interval); |
3b44a0ef DS |
828 | cmd->schedule[1].iterations = params->iterations[1]; |
829 | cmd->schedule[1].full_scan_mul = 1; | |
fb98be5e | 830 | |
15286e26 | 831 | if (iwl_mvm_scan_use_ebs(mvm, vif, n_iterations)) { |
1f9c418f DS |
832 | cmd->channel_opt[0].flags = |
833 | cpu_to_le16(IWL_SCAN_CHANNEL_FLAG_EBS | | |
834 | IWL_SCAN_CHANNEL_FLAG_EBS_ACCURATE | | |
835 | IWL_SCAN_CHANNEL_FLAG_CACHE_ADD); | |
836 | cmd->channel_opt[0].non_ebs_ratio = | |
837 | cpu_to_le16(IWL_DENSE_EBS_SCAN_RATIO); | |
838 | cmd->channel_opt[1].flags = | |
839 | cpu_to_le16(IWL_SCAN_CHANNEL_FLAG_EBS | | |
840 | IWL_SCAN_CHANNEL_FLAG_EBS_ACCURATE | | |
841 | IWL_SCAN_CHANNEL_FLAG_CACHE_ADD); | |
842 | cmd->channel_opt[1].non_ebs_ratio = | |
843 | cpu_to_le16(IWL_SPARSE_EBS_SCAN_RATIO); | |
844 | } | |
845 | ||
f7b788b4 LC |
846 | iwl_mvm_lmac_scan_cfg_channels(mvm, params->channels, |
847 | params->n_channels, ssid_bitmap, cmd); | |
fb98be5e | 848 | |
45d1b12e | 849 | *preq = params->preq; |
fb98be5e | 850 | |
8df3e68f | 851 | return 0; |
fb98be5e DS |
852 | } |
853 | ||
d2496221 DS |
854 | static int rate_to_scan_rate_flag(unsigned int rate) |
855 | { | |
856 | static const int rate_to_scan_rate[IWL_RATE_COUNT] = { | |
857 | [IWL_RATE_1M_INDEX] = SCAN_CONFIG_RATE_1M, | |
858 | [IWL_RATE_2M_INDEX] = SCAN_CONFIG_RATE_2M, | |
859 | [IWL_RATE_5M_INDEX] = SCAN_CONFIG_RATE_5M, | |
860 | [IWL_RATE_11M_INDEX] = SCAN_CONFIG_RATE_11M, | |
861 | [IWL_RATE_6M_INDEX] = SCAN_CONFIG_RATE_6M, | |
862 | [IWL_RATE_9M_INDEX] = SCAN_CONFIG_RATE_9M, | |
863 | [IWL_RATE_12M_INDEX] = SCAN_CONFIG_RATE_12M, | |
864 | [IWL_RATE_18M_INDEX] = SCAN_CONFIG_RATE_18M, | |
865 | [IWL_RATE_24M_INDEX] = SCAN_CONFIG_RATE_24M, | |
866 | [IWL_RATE_36M_INDEX] = SCAN_CONFIG_RATE_36M, | |
867 | [IWL_RATE_48M_INDEX] = SCAN_CONFIG_RATE_48M, | |
868 | [IWL_RATE_54M_INDEX] = SCAN_CONFIG_RATE_54M, | |
869 | }; | |
870 | ||
871 | return rate_to_scan_rate[rate]; | |
872 | } | |
873 | ||
874 | static __le32 iwl_mvm_scan_config_rates(struct iwl_mvm *mvm) | |
875 | { | |
876 | struct ieee80211_supported_band *band; | |
877 | unsigned int rates = 0; | |
878 | int i; | |
879 | ||
880 | band = &mvm->nvm_data->bands[IEEE80211_BAND_2GHZ]; | |
881 | for (i = 0; i < band->n_bitrates; i++) | |
882 | rates |= rate_to_scan_rate_flag(band->bitrates[i].hw_value); | |
883 | band = &mvm->nvm_data->bands[IEEE80211_BAND_5GHZ]; | |
884 | for (i = 0; i < band->n_bitrates; i++) | |
885 | rates |= rate_to_scan_rate_flag(band->bitrates[i].hw_value); | |
886 | ||
887 | /* Set both basic rates and supported rates */ | |
888 | rates |= SCAN_CONFIG_SUPPORTED_RATE(rates); | |
889 | ||
890 | return cpu_to_le32(rates); | |
891 | } | |
892 | ||
893 | int iwl_mvm_config_scan(struct iwl_mvm *mvm) | |
894 | { | |
895 | ||
896 | struct iwl_scan_config *scan_config; | |
897 | struct ieee80211_supported_band *band; | |
898 | int num_channels = | |
899 | mvm->nvm_data->bands[IEEE80211_BAND_2GHZ].n_channels + | |
900 | mvm->nvm_data->bands[IEEE80211_BAND_5GHZ].n_channels; | |
88742c9e | 901 | int ret, i, j = 0, cmd_size; |
d2496221 | 902 | struct iwl_host_cmd cmd = { |
88742c9e | 903 | .id = iwl_cmd_id(SCAN_CFG_CMD, IWL_ALWAYS_LONG_GROUP, 0), |
d2496221 DS |
904 | }; |
905 | ||
906 | if (WARN_ON(num_channels > mvm->fw->ucode_capa.n_scan_channels)) | |
907 | return -ENOBUFS; | |
908 | ||
909 | cmd_size = sizeof(*scan_config) + mvm->fw->ucode_capa.n_scan_channels; | |
910 | ||
911 | scan_config = kzalloc(cmd_size, GFP_KERNEL); | |
912 | if (!scan_config) | |
913 | return -ENOMEM; | |
914 | ||
d2496221 DS |
915 | scan_config->flags = cpu_to_le32(SCAN_CONFIG_FLAG_ACTIVATE | |
916 | SCAN_CONFIG_FLAG_ALLOW_CHUB_REQS | | |
917 | SCAN_CONFIG_FLAG_SET_TX_CHAINS | | |
918 | SCAN_CONFIG_FLAG_SET_RX_CHAINS | | |
919 | SCAN_CONFIG_FLAG_SET_ALL_TIMES | | |
920 | SCAN_CONFIG_FLAG_SET_LEGACY_RATES | | |
921 | SCAN_CONFIG_FLAG_SET_MAC_ADDR | | |
922 | SCAN_CONFIG_FLAG_SET_CHANNEL_FLAGS| | |
923 | SCAN_CONFIG_N_CHANNELS(num_channels)); | |
a0544272 | 924 | scan_config->tx_chains = cpu_to_le32(iwl_mvm_get_valid_tx_ant(mvm)); |
d2496221 DS |
925 | scan_config->rx_chains = cpu_to_le32(iwl_mvm_scan_rx_ant(mvm)); |
926 | scan_config->legacy_rates = iwl_mvm_scan_config_rates(mvm); | |
927 | scan_config->out_of_channel_time = cpu_to_le32(170); | |
928 | scan_config->suspend_time = cpu_to_le32(30); | |
929 | scan_config->dwell_active = 20; | |
930 | scan_config->dwell_passive = 110; | |
931 | scan_config->dwell_fragmented = 20; | |
932 | ||
933 | memcpy(&scan_config->mac_addr, &mvm->addresses[0].addr, ETH_ALEN); | |
934 | ||
935 | scan_config->bcast_sta_id = mvm->aux_sta.sta_id; | |
936 | scan_config->channel_flags = IWL_CHANNEL_FLAG_EBS | | |
937 | IWL_CHANNEL_FLAG_ACCURATE_EBS | | |
938 | IWL_CHANNEL_FLAG_EBS_ADD | | |
939 | IWL_CHANNEL_FLAG_PRE_SCAN_PASSIVE2ACTIVE; | |
940 | ||
941 | band = &mvm->nvm_data->bands[IEEE80211_BAND_2GHZ]; | |
942 | for (i = 0; i < band->n_channels; i++, j++) | |
a25d40e2 | 943 | scan_config->channel_array[j] = band->channels[i].hw_value; |
d2496221 DS |
944 | band = &mvm->nvm_data->bands[IEEE80211_BAND_5GHZ]; |
945 | for (i = 0; i < band->n_channels; i++, j++) | |
a25d40e2 | 946 | scan_config->channel_array[j] = band->channels[i].hw_value; |
d2496221 DS |
947 | |
948 | cmd.data[0] = scan_config; | |
949 | cmd.len[0] = cmd_size; | |
950 | cmd.dataflags[0] = IWL_HCMD_DFL_NOCOPY; | |
951 | ||
952 | IWL_DEBUG_SCAN(mvm, "Sending UMAC scan config\n"); | |
953 | ||
954 | ret = iwl_mvm_send_cmd(mvm, &cmd); | |
955 | ||
956 | kfree(scan_config); | |
957 | return ret; | |
958 | } | |
959 | ||
6185af2a | 960 | static int iwl_mvm_scan_uid_by_status(struct iwl_mvm *mvm, int status) |
d2496221 DS |
961 | { |
962 | int i; | |
963 | ||
507e4cda | 964 | for (i = 0; i < mvm->max_scans; i++) |
6185af2a | 965 | if (mvm->scan_uid_status[i] == status) |
d2496221 DS |
966 | return i; |
967 | ||
6185af2a | 968 | return -ENOENT; |
d2496221 DS |
969 | } |
970 | ||
133c8259 | 971 | static void iwl_mvm_scan_umac_dwell(struct iwl_mvm *mvm, |
d2496221 DS |
972 | struct iwl_scan_req_umac *cmd, |
973 | struct iwl_mvm_scan_params *params) | |
974 | { | |
9437e994 DS |
975 | cmd->active_dwell = scan_timing[params->type].dwell_active; |
976 | cmd->passive_dwell = scan_timing[params->type].dwell_passive; | |
977 | cmd->fragmented_dwell = scan_timing[params->type].dwell_fragmented; | |
978 | cmd->max_out_time = cpu_to_le32(scan_timing[params->type].max_out_time); | |
979 | cmd->suspend_time = cpu_to_le32(scan_timing[params->type].suspend_time); | |
d7afbfc4 AS |
980 | cmd->scan_priority = |
981 | iwl_mvm_scan_priority(mvm, IWL_SCAN_PRIORITY_EXT_6); | |
133c8259 | 982 | |
dc9f69b9 | 983 | if (iwl_mvm_scan_total_iterations(params) == 1) |
d7afbfc4 AS |
984 | cmd->ooc_priority = |
985 | iwl_mvm_scan_priority(mvm, IWL_SCAN_PRIORITY_EXT_6); | |
133c8259 | 986 | else |
d7afbfc4 AS |
987 | cmd->ooc_priority = |
988 | iwl_mvm_scan_priority(mvm, IWL_SCAN_PRIORITY_EXT_2); | |
d2496221 DS |
989 | } |
990 | ||
991 | static void | |
992 | iwl_mvm_umac_scan_cfg_channels(struct iwl_mvm *mvm, | |
993 | struct ieee80211_channel **channels, | |
994 | int n_channels, u32 ssid_bitmap, | |
995 | struct iwl_scan_req_umac *cmd) | |
996 | { | |
997 | struct iwl_scan_channel_cfg_umac *channel_cfg = (void *)&cmd->data; | |
998 | int i; | |
999 | ||
1000 | for (i = 0; i < n_channels; i++) { | |
1001 | channel_cfg[i].flags = cpu_to_le32(ssid_bitmap); | |
1002 | channel_cfg[i].channel_num = channels[i]->hw_value; | |
1003 | channel_cfg[i].iter_count = 1; | |
1004 | channel_cfg[i].iter_interval = 0; | |
1005 | } | |
1006 | } | |
1007 | ||
6f4dcc76 LC |
1008 | static u32 iwl_mvm_scan_umac_flags(struct iwl_mvm *mvm, |
1009 | struct iwl_mvm_scan_params *params) | |
d2496221 DS |
1010 | { |
1011 | int flags = 0; | |
1012 | ||
6f4dcc76 | 1013 | if (params->n_ssids == 0) |
d2496221 DS |
1014 | flags = IWL_UMAC_SCAN_GEN_FLAGS_PASSIVE; |
1015 | ||
6f4dcc76 | 1016 | if (params->n_ssids == 1 && params->ssids[0].ssid_len != 0) |
d2496221 DS |
1017 | flags |= IWL_UMAC_SCAN_GEN_FLAGS_PRE_CONNECT; |
1018 | ||
9437e994 | 1019 | if (params->type == IWL_SCAN_TYPE_FRAGMENTED) |
d2496221 DS |
1020 | flags |= IWL_UMAC_SCAN_GEN_FLAGS_FRAGMENTED; |
1021 | ||
1022 | if (iwl_mvm_rrm_scan_needed(mvm)) | |
1023 | flags |= IWL_UMAC_SCAN_GEN_FLAGS_RRM_ENABLED; | |
1024 | ||
6f4dcc76 LC |
1025 | if (params->pass_all) |
1026 | flags |= IWL_UMAC_SCAN_GEN_FLAGS_PASS_ALL; | |
1027 | else | |
1028 | flags |= IWL_UMAC_SCAN_GEN_FLAGS_MATCH; | |
1029 | ||
1030 | if (iwl_mvm_scan_total_iterations(params) > 1) | |
1031 | flags |= IWL_UMAC_SCAN_GEN_FLAGS_PERIODIC; | |
1032 | ||
ee9219b2 AS |
1033 | #ifdef CONFIG_IWLWIFI_DEBUGFS |
1034 | if (mvm->scan_iter_notif_enabled) | |
1035 | flags |= IWL_UMAC_SCAN_GEN_FLAGS_ITER_COMPLETE; | |
1036 | #endif | |
d2496221 DS |
1037 | return flags; |
1038 | } | |
1039 | ||
6749dd80 | 1040 | static int iwl_mvm_scan_umac(struct iwl_mvm *mvm, struct ieee80211_vif *vif, |
6185af2a LC |
1041 | struct iwl_mvm_scan_params *params, |
1042 | int type) | |
d2496221 | 1043 | { |
d2496221 DS |
1044 | struct iwl_scan_req_umac *cmd = mvm->scan_cmd; |
1045 | struct iwl_scan_req_umac_tail *sec_part = (void *)&cmd->data + | |
1046 | sizeof(struct iwl_scan_channel_cfg_umac) * | |
1047 | mvm->fw->ucode_capa.n_scan_channels; | |
6185af2a | 1048 | int uid; |
c8660dd5 | 1049 | u32 ssid_bitmap = 0; |
6f4dcc76 | 1050 | int n_iterations = iwl_mvm_scan_total_iterations(params); |
d2496221 DS |
1051 | |
1052 | lockdep_assert_held(&mvm->mutex); | |
1053 | ||
6185af2a LC |
1054 | uid = iwl_mvm_scan_uid_by_status(mvm, 0); |
1055 | if (uid < 0) | |
1056 | return uid; | |
d2496221 | 1057 | |
133c8259 | 1058 | memset(cmd, 0, ksize(cmd)); |
d2496221 | 1059 | |
133c8259 LC |
1060 | iwl_mvm_scan_umac_dwell(mvm, cmd, params); |
1061 | ||
6185af2a | 1062 | mvm->scan_uid_status[uid] = type; |
d2496221 | 1063 | |
d2496221 | 1064 | cmd->uid = cpu_to_le32(uid); |
6f4dcc76 | 1065 | cmd->general_flags = cpu_to_le32(iwl_mvm_scan_umac_flags(mvm, params)); |
d2496221 | 1066 | |
8465fe6a AS |
1067 | if (type == IWL_MVM_SCAN_SCHED) |
1068 | cmd->flags = cpu_to_le32(IWL_UMAC_SCAN_FLAG_PREEMPTIVE); | |
1069 | ||
15286e26 | 1070 | if (iwl_mvm_scan_use_ebs(mvm, vif, n_iterations)) |
d2496221 DS |
1071 | cmd->channel_flags = IWL_SCAN_CHANNEL_FLAG_EBS | |
1072 | IWL_SCAN_CHANNEL_FLAG_EBS_ACCURATE | | |
1073 | IWL_SCAN_CHANNEL_FLAG_CACHE_ADD; | |
1074 | ||
f7b788b4 | 1075 | cmd->n_channels = params->n_channels; |
d2496221 | 1076 | |
e2ec4f6d | 1077 | iwl_scan_build_ssids(params, sec_part->direct_scan, &ssid_bitmap); |
d2496221 | 1078 | |
f7b788b4 LC |
1079 | iwl_mvm_umac_scan_cfg_channels(mvm, params->channels, |
1080 | params->n_channels, ssid_bitmap, cmd); | |
d2496221 | 1081 | |
a54cb641 LC |
1082 | /* With UMAC we use only one schedule for now, so use the sum |
1083 | * of the iterations (with a a maximum of 255). | |
8423cdc3 LC |
1084 | */ |
1085 | sec_part->schedule[0].iter_count = | |
1086 | (n_iterations > 255) ? 255 : n_iterations; | |
cf5d317d LC |
1087 | sec_part->schedule[0].interval = cpu_to_le16(params->interval); |
1088 | ||
283c2491 | 1089 | sec_part->delay = cpu_to_le16(params->delay); |
45d1b12e | 1090 | sec_part->preq = params->preq; |
d2496221 | 1091 | |
8df3e68f | 1092 | return 0; |
d2496221 DS |
1093 | } |
1094 | ||
6749dd80 LC |
1095 | static int iwl_mvm_num_scans(struct iwl_mvm *mvm) |
1096 | { | |
1097 | return hweight32(mvm->scan_status & IWL_MVM_SCAN_MASK); | |
1098 | } | |
1099 | ||
1100 | static int iwl_mvm_check_running_scans(struct iwl_mvm *mvm, int type) | |
1101 | { | |
1102 | /* This looks a bit arbitrary, but the idea is that if we run | |
1103 | * out of possible simultaneous scans and the userspace is | |
1104 | * trying to run a scan type that is already running, we | |
1105 | * return -EBUSY. But if the userspace wants to start a | |
1106 | * different type of scan, we stop the opposite type to make | |
1107 | * space for the new request. The reason is backwards | |
1108 | * compatibility with old wpa_supplicant that wouldn't stop a | |
1109 | * scheduled scan before starting a normal scan. | |
1110 | */ | |
1111 | ||
1112 | if (iwl_mvm_num_scans(mvm) < mvm->max_scans) | |
1113 | return 0; | |
1114 | ||
1115 | /* Use a switch, even though this is a bitmask, so that more | |
1116 | * than one bits set will fall in default and we will warn. | |
1117 | */ | |
1118 | switch (type) { | |
1119 | case IWL_MVM_SCAN_REGULAR: | |
1120 | if (mvm->scan_status & IWL_MVM_SCAN_REGULAR_MASK) | |
1121 | return -EBUSY; | |
c7d42480 | 1122 | return iwl_mvm_scan_stop(mvm, IWL_MVM_SCAN_SCHED, true); |
6749dd80 LC |
1123 | case IWL_MVM_SCAN_SCHED: |
1124 | if (mvm->scan_status & IWL_MVM_SCAN_SCHED_MASK) | |
1125 | return -EBUSY; | |
c7d42480 | 1126 | iwl_mvm_scan_stop(mvm, IWL_MVM_SCAN_REGULAR, true); |
19945dfb LC |
1127 | case IWL_MVM_SCAN_NETDETECT: |
1128 | /* No need to stop anything for net-detect since the | |
1129 | * firmware is restarted anyway. This way, any sched | |
1130 | * scans that were running will be restarted when we | |
1131 | * resume. | |
1132 | */ | |
1133 | return 0; | |
6749dd80 LC |
1134 | default: |
1135 | WARN_ON(1); | |
1136 | break; | |
1137 | } | |
1138 | ||
1139 | return -EIO; | |
1140 | } | |
1141 | ||
1142 | int iwl_mvm_reg_scan_start(struct iwl_mvm *mvm, struct ieee80211_vif *vif, | |
1143 | struct cfg80211_scan_request *req, | |
1144 | struct ieee80211_scan_ies *ies) | |
1145 | { | |
3db7c6e7 LC |
1146 | struct iwl_host_cmd hcmd = { |
1147 | .len = { iwl_mvm_scan_size(mvm), }, | |
1148 | .data = { mvm->scan_cmd, }, | |
1149 | .dataflags = { IWL_HCMD_DFL_NOCOPY, }, | |
1150 | }; | |
1151 | struct iwl_mvm_scan_params params = {}; | |
6749dd80 LC |
1152 | int ret; |
1153 | ||
1154 | lockdep_assert_held(&mvm->mutex); | |
1155 | ||
1156 | if (iwl_mvm_is_lar_supported(mvm) && !mvm->lar_regdom_set) { | |
1157 | IWL_ERR(mvm, "scan while LAR regdomain is not set\n"); | |
1158 | return -EBUSY; | |
1159 | } | |
1160 | ||
1161 | ret = iwl_mvm_check_running_scans(mvm, IWL_MVM_SCAN_REGULAR); | |
1162 | if (ret) | |
1163 | return ret; | |
1164 | ||
1165 | iwl_mvm_ref(mvm, IWL_MVM_REF_SCAN); | |
1166 | ||
3db7c6e7 LC |
1167 | /* we should have failed registration if scan_cmd was NULL */ |
1168 | if (WARN_ON(!mvm->scan_cmd)) | |
1169 | return -ENOMEM; | |
1170 | ||
1171 | if (!iwl_mvm_scan_fits(mvm, req->n_ssids, ies, req->n_channels)) | |
1172 | return -ENOBUFS; | |
1173 | ||
4b817051 LC |
1174 | params.n_ssids = req->n_ssids; |
1175 | params.flags = req->flags; | |
f7b788b4 LC |
1176 | params.n_channels = req->n_channels; |
1177 | params.delay = 0; | |
1178 | params.interval = 0; | |
1179 | params.ssids = req->ssids; | |
1180 | params.channels = req->channels; | |
1181 | params.mac_addr = req->mac_addr; | |
1182 | params.mac_addr_mask = req->mac_addr_mask; | |
1183 | params.no_cck = req->no_cck; | |
1184 | params.pass_all = true; | |
1185 | params.n_match_sets = 0; | |
1186 | params.match_sets = NULL; | |
3db7c6e7 | 1187 | |
3b44a0ef DS |
1188 | params.iterations[0] = 1; |
1189 | params.iterations[1] = 0; | |
cf5d317d | 1190 | |
9437e994 | 1191 | params.type = iwl_mvm_get_scan_type(mvm, vif, ¶ms); |
4b817051 | 1192 | |
45d1b12e LC |
1193 | iwl_mvm_build_scan_probe(mvm, vif, ies, ¶ms); |
1194 | ||
859d914c | 1195 | if (fw_has_capa(&mvm->fw->ucode_capa, IWL_UCODE_TLV_CAPA_UMAC_SCAN)) { |
88742c9e | 1196 | hcmd.id = iwl_cmd_id(SCAN_REQ_UMAC, IWL_ALWAYS_LONG_GROUP, 0); |
6185af2a LC |
1197 | ret = iwl_mvm_scan_umac(mvm, vif, ¶ms, |
1198 | IWL_MVM_SCAN_REGULAR); | |
3db7c6e7 LC |
1199 | } else { |
1200 | hcmd.id = SCAN_OFFLOAD_REQUEST_CMD; | |
45d1b12e | 1201 | ret = iwl_mvm_scan_lmac(mvm, vif, ¶ms); |
3db7c6e7 LC |
1202 | } |
1203 | ||
1204 | if (ret) | |
1205 | return ret; | |
1206 | ||
1207 | ret = iwl_mvm_send_cmd(mvm, &hcmd); | |
1208 | if (!ret) { | |
1209 | IWL_DEBUG_SCAN(mvm, "Scan request was sent successfully\n"); | |
1210 | mvm->scan_status |= IWL_MVM_SCAN_REGULAR; | |
1211 | } else { | |
1212 | /* If the scan failed, it usually means that the FW was unable | |
1213 | * to allocate the time events. Warn on it, but maybe we | |
1214 | * should try to send the command again with different params. | |
1215 | */ | |
1216 | IWL_ERR(mvm, "Scan failed! ret %d\n", ret); | |
1217 | } | |
6749dd80 LC |
1218 | |
1219 | if (ret) | |
1220 | iwl_mvm_unref(mvm, IWL_MVM_REF_SCAN); | |
1221 | ||
1222 | return ret; | |
1223 | } | |
1224 | ||
65ff556b LC |
1225 | int iwl_mvm_sched_scan_start(struct iwl_mvm *mvm, |
1226 | struct ieee80211_vif *vif, | |
1227 | struct cfg80211_sched_scan_request *req, | |
19945dfb LC |
1228 | struct ieee80211_scan_ies *ies, |
1229 | int type) | |
65ff556b | 1230 | { |
8df3e68f LC |
1231 | struct iwl_host_cmd hcmd = { |
1232 | .len = { iwl_mvm_scan_size(mvm), }, | |
1233 | .data = { mvm->scan_cmd, }, | |
1234 | .dataflags = { IWL_HCMD_DFL_NOCOPY, }, | |
1235 | }; | |
1236 | struct iwl_mvm_scan_params params = {}; | |
65ff556b LC |
1237 | int ret; |
1238 | ||
6749dd80 LC |
1239 | lockdep_assert_held(&mvm->mutex); |
1240 | ||
1241 | if (iwl_mvm_is_lar_supported(mvm) && !mvm->lar_regdom_set) { | |
1242 | IWL_ERR(mvm, "sched-scan while LAR regdomain is not set\n"); | |
1243 | return -EBUSY; | |
1244 | } | |
1245 | ||
19945dfb | 1246 | ret = iwl_mvm_check_running_scans(mvm, type); |
6749dd80 LC |
1247 | if (ret) |
1248 | return ret; | |
1249 | ||
8df3e68f LC |
1250 | /* we should have failed registration if scan_cmd was NULL */ |
1251 | if (WARN_ON(!mvm->scan_cmd)) | |
1252 | return -ENOMEM; | |
1253 | ||
1254 | if (!iwl_mvm_scan_fits(mvm, req->n_ssids, ies, req->n_channels)) | |
1255 | return -ENOBUFS; | |
1256 | ||
4b817051 LC |
1257 | params.n_ssids = req->n_ssids; |
1258 | params.flags = req->flags; | |
f7b788b4 | 1259 | params.n_channels = req->n_channels; |
f7b788b4 LC |
1260 | params.ssids = req->ssids; |
1261 | params.channels = req->channels; | |
1262 | params.mac_addr = req->mac_addr; | |
1263 | params.mac_addr_mask = req->mac_addr_mask; | |
1264 | params.no_cck = false; | |
1265 | params.pass_all = iwl_mvm_scan_pass_all(mvm, req); | |
1266 | params.n_match_sets = req->n_match_sets; | |
1267 | params.match_sets = req->match_sets; | |
1268 | ||
3b44a0ef DS |
1269 | params.iterations[0] = 0; |
1270 | params.iterations[1] = 0xff; | |
1271 | ||
9437e994 | 1272 | params.type = iwl_mvm_get_scan_type(mvm, vif, ¶ms); |
cf5d317d | 1273 | |
f7b788b4 LC |
1274 | if (req->interval > U16_MAX) { |
1275 | IWL_DEBUG_SCAN(mvm, | |
1276 | "interval value is > 16-bits, set to max possible\n"); | |
1277 | params.interval = U16_MAX; | |
1278 | } else { | |
1279 | params.interval = req->interval / MSEC_PER_SEC; | |
1280 | } | |
8df3e68f | 1281 | |
283c2491 LC |
1282 | /* In theory, LMAC scans can handle a 32-bit delay, but since |
1283 | * waiting for over 18 hours to start the scan is a bit silly | |
1284 | * and to keep it aligned with UMAC scans (which only support | |
1285 | * 16-bit delays), trim it down to 16-bits. | |
1286 | */ | |
1287 | if (req->delay > U16_MAX) { | |
1288 | IWL_DEBUG_SCAN(mvm, | |
1289 | "delay value is > 16-bits, set to max possible\n"); | |
1290 | params.delay = U16_MAX; | |
1291 | } else { | |
1292 | params.delay = req->delay; | |
1293 | } | |
1294 | ||
65ff556b LC |
1295 | ret = iwl_mvm_config_sched_scan_profiles(mvm, req); |
1296 | if (ret) | |
1297 | return ret; | |
1298 | ||
45d1b12e LC |
1299 | iwl_mvm_build_scan_probe(mvm, vif, ies, ¶ms); |
1300 | ||
859d914c | 1301 | if (fw_has_capa(&mvm->fw->ucode_capa, IWL_UCODE_TLV_CAPA_UMAC_SCAN)) { |
88742c9e | 1302 | hcmd.id = iwl_cmd_id(SCAN_REQ_UMAC, IWL_ALWAYS_LONG_GROUP, 0); |
6185af2a | 1303 | ret = iwl_mvm_scan_umac(mvm, vif, ¶ms, IWL_MVM_SCAN_SCHED); |
65ff556b | 1304 | } else { |
8df3e68f | 1305 | hcmd.id = SCAN_OFFLOAD_REQUEST_CMD; |
7d7de1e9 | 1306 | ret = iwl_mvm_scan_lmac(mvm, vif, ¶ms); |
8df3e68f LC |
1307 | } |
1308 | ||
1309 | if (ret) | |
1310 | return ret; | |
1311 | ||
1312 | ret = iwl_mvm_send_cmd(mvm, &hcmd); | |
1313 | if (!ret) { | |
1314 | IWL_DEBUG_SCAN(mvm, | |
1315 | "Sched scan request was sent successfully\n"); | |
1316 | mvm->scan_status |= type; | |
1317 | } else { | |
1318 | /* If the scan failed, it usually means that the FW was unable | |
1319 | * to allocate the time events. Warn on it, but maybe we | |
1320 | * should try to send the command again with different params. | |
1321 | */ | |
1322 | IWL_ERR(mvm, "Sched scan failed! ret %d\n", ret); | |
65ff556b LC |
1323 | } |
1324 | ||
1325 | return ret; | |
1326 | } | |
1327 | ||
0416841d JB |
1328 | void iwl_mvm_rx_umac_scan_complete_notif(struct iwl_mvm *mvm, |
1329 | struct iwl_rx_cmd_buffer *rxb) | |
d2496221 DS |
1330 | { |
1331 | struct iwl_rx_packet *pkt = rxb_addr(rxb); | |
1332 | struct iwl_umac_scan_complete *notif = (void *)pkt->data; | |
1333 | u32 uid = __le32_to_cpu(notif->uid); | |
8d14ccd8 | 1334 | bool aborted = (notif->status == IWL_SCAN_OFFLOAD_ABORTED); |
d2496221 | 1335 | |
8d14ccd8 | 1336 | if (WARN_ON(!(mvm->scan_uid_status[uid] & mvm->scan_status))) |
0416841d | 1337 | return; |
d2496221 | 1338 | |
8d14ccd8 LC |
1339 | /* if the scan is already stopping, we don't need to notify mac80211 */ |
1340 | if (mvm->scan_uid_status[uid] == IWL_MVM_SCAN_REGULAR) { | |
1341 | ieee80211_scan_completed(mvm->hw, aborted); | |
1342 | iwl_mvm_unref(mvm, IWL_MVM_REF_SCAN); | |
1343 | } else if (mvm->scan_uid_status[uid] == IWL_MVM_SCAN_SCHED) { | |
1344 | ieee80211_sched_scan_stopped(mvm->hw); | |
1345 | } | |
1346 | ||
1347 | mvm->scan_status &= ~mvm->scan_uid_status[uid]; | |
d2496221 | 1348 | IWL_DEBUG_SCAN(mvm, |
a7b3bc91 | 1349 | "Scan completed, uid %u type %u, status %s, EBS status %s\n", |
8d14ccd8 | 1350 | uid, mvm->scan_uid_status[uid], |
d2496221 DS |
1351 | notif->status == IWL_SCAN_OFFLOAD_COMPLETED ? |
1352 | "completed" : "aborted", | |
a7b3bc91 AB |
1353 | iwl_mvm_ebs_status_str(notif->ebs_status)); |
1354 | IWL_DEBUG_SCAN(mvm, | |
1355 | "Last line %d, Last iteration %d, Time from last iteration %d\n", | |
1a84e771 AB |
1356 | notif->last_schedule, notif->last_iter, |
1357 | __le32_to_cpu(notif->time_from_last_iter)); | |
d2496221 | 1358 | |
f0bf8593 DS |
1359 | if (notif->ebs_status != IWL_SCAN_EBS_SUCCESS && |
1360 | notif->ebs_status != IWL_SCAN_EBS_INACTIVE) | |
5a4b2afa HD |
1361 | mvm->last_ebs_successful = false; |
1362 | ||
6185af2a | 1363 | mvm->scan_uid_status[uid] = 0; |
d2496221 DS |
1364 | } |
1365 | ||
0416841d JB |
1366 | void iwl_mvm_rx_umac_scan_iter_complete_notif(struct iwl_mvm *mvm, |
1367 | struct iwl_rx_cmd_buffer *rxb) | |
ee9219b2 AS |
1368 | { |
1369 | struct iwl_rx_packet *pkt = rxb_addr(rxb); | |
1370 | struct iwl_umac_scan_iter_complete_notif *notif = (void *)pkt->data; | |
1371 | u8 buf[256]; | |
1372 | ||
1373 | IWL_DEBUG_SCAN(mvm, | |
1374 | "UMAC Scan iteration complete: status=0x%x scanned_channels=%d channels list: %s\n", | |
1375 | notif->status, notif->scanned_channels, | |
1376 | iwl_mvm_dump_channel_list(notif->results, | |
1377 | notif->scanned_channels, buf, | |
1378 | sizeof(buf))); | |
ee9219b2 AS |
1379 | } |
1380 | ||
434f3c1b | 1381 | static int iwl_mvm_umac_scan_abort(struct iwl_mvm *mvm, int type) |
d2496221 | 1382 | { |
88742c9e | 1383 | struct iwl_umac_scan_abort cmd = {}; |
434f3c1b | 1384 | int uid, ret; |
d2496221 DS |
1385 | |
1386 | lockdep_assert_held(&mvm->mutex); | |
1387 | ||
434f3c1b LC |
1388 | /* We should always get a valid index here, because we already |
1389 | * checked that this type of scan was running in the generic | |
1390 | * code. | |
1391 | */ | |
1392 | uid = iwl_mvm_scan_uid_by_status(mvm, type); | |
1393 | if (WARN_ON_ONCE(uid < 0)) | |
1394 | return uid; | |
1395 | ||
1396 | cmd.uid = cpu_to_le32(uid); | |
1397 | ||
d2496221 DS |
1398 | IWL_DEBUG_SCAN(mvm, "Sending scan abort, uid %u\n", uid); |
1399 | ||
88742c9e JB |
1400 | ret = iwl_mvm_send_cmd_pdu(mvm, |
1401 | iwl_cmd_id(SCAN_ABORT_UMAC, | |
1402 | IWL_ALWAYS_LONG_GROUP, 0), | |
1403 | 0, sizeof(cmd), &cmd); | |
434f3c1b | 1404 | if (!ret) |
8d14ccd8 | 1405 | mvm->scan_uid_status[uid] = type << IWL_MVM_SCAN_STOPPING_SHIFT; |
434f3c1b LC |
1406 | |
1407 | return ret; | |
d2496221 DS |
1408 | } |
1409 | ||
f2461796 | 1410 | static int iwl_mvm_scan_stop_wait(struct iwl_mvm *mvm, int type) |
d2496221 DS |
1411 | { |
1412 | struct iwl_notification_wait wait_scan_done; | |
6eb031d2 | 1413 | static const u16 scan_done_notif[] = { SCAN_COMPLETE_UMAC, |
f2461796 | 1414 | SCAN_OFFLOAD_COMPLETE, }; |
434f3c1b | 1415 | int ret; |
d2496221 | 1416 | |
f2461796 LC |
1417 | lockdep_assert_held(&mvm->mutex); |
1418 | ||
d2496221 DS |
1419 | iwl_init_notification_wait(&mvm->notif_wait, &wait_scan_done, |
1420 | scan_done_notif, | |
1421 | ARRAY_SIZE(scan_done_notif), | |
434f3c1b | 1422 | NULL, NULL); |
d2496221 DS |
1423 | |
1424 | IWL_DEBUG_SCAN(mvm, "Preparing to stop scan, type %x\n", type); | |
1425 | ||
859d914c | 1426 | if (fw_has_capa(&mvm->fw->ucode_capa, IWL_UCODE_TLV_CAPA_UMAC_SCAN)) |
f2461796 LC |
1427 | ret = iwl_mvm_umac_scan_abort(mvm, type); |
1428 | else | |
1429 | ret = iwl_mvm_lmac_scan_abort(mvm); | |
1430 | ||
d2496221 | 1431 | if (ret) { |
434f3c1b | 1432 | IWL_DEBUG_SCAN(mvm, "couldn't stop scan type %d\n", type); |
d2496221 DS |
1433 | iwl_remove_notification(&mvm->notif_wait, &wait_scan_done); |
1434 | return ret; | |
1435 | } | |
1436 | ||
1437 | ret = iwl_wait_notification(&mvm->notif_wait, &wait_scan_done, 1 * HZ); | |
d2496221 DS |
1438 | |
1439 | return ret; | |
1440 | } | |
1441 | ||
1442 | int iwl_mvm_scan_size(struct iwl_mvm *mvm) | |
1443 | { | |
859d914c | 1444 | if (fw_has_capa(&mvm->fw->ucode_capa, IWL_UCODE_TLV_CAPA_UMAC_SCAN)) |
d2496221 DS |
1445 | return sizeof(struct iwl_scan_req_umac) + |
1446 | sizeof(struct iwl_scan_channel_cfg_umac) * | |
1447 | mvm->fw->ucode_capa.n_scan_channels + | |
1448 | sizeof(struct iwl_scan_req_umac_tail); | |
1449 | ||
65ff556b | 1450 | return sizeof(struct iwl_scan_req_lmac) + |
1f940386 LC |
1451 | sizeof(struct iwl_scan_channel_cfg_lmac) * |
1452 | mvm->fw->ucode_capa.n_scan_channels + | |
1453 | sizeof(struct iwl_scan_probe_req); | |
d2496221 | 1454 | } |
4ffb3650 DS |
1455 | |
1456 | /* | |
1457 | * This function is used in nic restart flow, to inform mac80211 about scans | |
1458 | * that was aborted by restart flow or by an assert. | |
1459 | */ | |
1460 | void iwl_mvm_report_scan_aborted(struct iwl_mvm *mvm) | |
1461 | { | |
859d914c | 1462 | if (fw_has_capa(&mvm->fw->ucode_capa, IWL_UCODE_TLV_CAPA_UMAC_SCAN)) { |
6185af2a | 1463 | int uid, i; |
963221be | 1464 | |
6185af2a LC |
1465 | uid = iwl_mvm_scan_uid_by_status(mvm, IWL_MVM_SCAN_REGULAR); |
1466 | if (uid >= 0) { | |
4ffb3650 | 1467 | ieee80211_scan_completed(mvm->hw, true); |
6185af2a | 1468 | mvm->scan_uid_status[uid] = 0; |
963221be | 1469 | } |
6185af2a LC |
1470 | uid = iwl_mvm_scan_uid_by_status(mvm, IWL_MVM_SCAN_SCHED); |
1471 | if (uid >= 0 && !mvm->restart_fw) { | |
4ffb3650 | 1472 | ieee80211_sched_scan_stopped(mvm->hw); |
6185af2a | 1473 | mvm->scan_uid_status[uid] = 0; |
963221be AB |
1474 | } |
1475 | ||
1476 | /* We shouldn't have any UIDs still set. Loop over all the | |
1477 | * UIDs to make sure there's nothing left there and warn if | |
1478 | * any is found. | |
1479 | */ | |
507e4cda | 1480 | for (i = 0; i < mvm->max_scans; i++) { |
6185af2a LC |
1481 | if (WARN_ONCE(mvm->scan_uid_status[i], |
1482 | "UMAC scan UID %d status was not cleaned\n", | |
1483 | i)) | |
1484 | mvm->scan_uid_status[i] = 0; | |
963221be | 1485 | } |
4ffb3650 | 1486 | } else { |
9af91f46 | 1487 | if (mvm->scan_status & IWL_MVM_SCAN_REGULAR) |
4ffb3650 | 1488 | ieee80211_scan_completed(mvm->hw, true); |
9af91f46 LC |
1489 | |
1490 | /* Sched scan will be restarted by mac80211 in | |
1491 | * restart_hw, so do not report if FW is about to be | |
1492 | * restarted. | |
1493 | */ | |
1494 | if ((mvm->scan_status & IWL_MVM_SCAN_SCHED) && !mvm->restart_fw) | |
1495 | ieee80211_sched_scan_stopped(mvm->hw); | |
4ffb3650 DS |
1496 | } |
1497 | } | |
dfbf156d | 1498 | |
c7d42480 | 1499 | int iwl_mvm_scan_stop(struct iwl_mvm *mvm, int type, bool notify) |
dfbf156d LC |
1500 | { |
1501 | int ret; | |
1502 | ||
c7d42480 | 1503 | if (!(mvm->scan_status & type)) |
dfbf156d LC |
1504 | return 0; |
1505 | ||
1506 | if (iwl_mvm_is_radio_killed(mvm)) { | |
1507 | ret = 0; | |
1508 | goto out; | |
1509 | } | |
1510 | ||
c7d42480 | 1511 | ret = iwl_mvm_scan_stop_wait(mvm, type); |
dfbf156d | 1512 | if (!ret) |
c7d42480 | 1513 | mvm->scan_status |= type << IWL_MVM_SCAN_STOPPING_SHIFT; |
dfbf156d LC |
1514 | out: |
1515 | /* Clear the scan status so the next scan requests will | |
1516 | * succeed and mark the scan as stopping, so that the Rx | |
1517 | * handler doesn't do anything, as the scan was stopped from | |
c7d42480 | 1518 | * above. |
dfbf156d | 1519 | */ |
c7d42480 | 1520 | mvm->scan_status &= ~type; |
dfbf156d | 1521 | |
c7d42480 LC |
1522 | if (type == IWL_MVM_SCAN_REGULAR) { |
1523 | /* Since the rx handler won't do anything now, we have | |
1524 | * to release the scan reference here. | |
1525 | */ | |
1526 | iwl_mvm_unref(mvm, IWL_MVM_REF_SCAN); | |
1527 | if (notify) | |
1528 | ieee80211_scan_completed(mvm->hw, true); | |
1529 | } else if (notify) { | |
dfbf156d | 1530 | ieee80211_sched_scan_stopped(mvm->hw); |
c7d42480 | 1531 | } |
dfbf156d LC |
1532 | |
1533 | return ret; | |
1534 | } |