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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 AB |
74 | |
75 | struct iwl_mvm_scan_params { | |
76 | u32 max_out_time; | |
77 | u32 suspend_time; | |
50df8a30 | 78 | bool passive_fragmented; |
f7b788b4 | 79 | u32 n_channels; |
283c2491 | 80 | u16 delay; |
f7b788b4 LC |
81 | int n_ssids; |
82 | struct cfg80211_ssid *ssids; | |
83 | struct ieee80211_channel **channels; | |
84 | u16 interval; /* interval between scans (in secs) */ | |
85 | u32 flags; | |
86 | u8 *mac_addr; | |
87 | u8 *mac_addr_mask; | |
88 | bool no_cck; | |
89 | bool pass_all; | |
90 | int n_match_sets; | |
45d1b12e | 91 | struct iwl_scan_probe_req preq; |
f7b788b4 | 92 | struct cfg80211_match_set *match_sets; |
50df8a30 AB |
93 | struct _dwell { |
94 | u16 passive; | |
95 | u16 active; | |
190f1029 | 96 | u16 fragmented; |
50df8a30 | 97 | } dwell[IEEE80211_NUM_BANDS]; |
cf5d317d LC |
98 | struct { |
99 | u8 iterations; | |
100 | u8 full_scan_mul; /* not used for UMAC */ | |
101 | } schedule[2]; | |
8a110d9b | 102 | }; |
8ca151b5 | 103 | |
d2496221 DS |
104 | static u8 iwl_mvm_scan_rx_ant(struct iwl_mvm *mvm) |
105 | { | |
106 | if (mvm->scan_rx_ant != ANT_NONE) | |
107 | return mvm->scan_rx_ant; | |
a0544272 | 108 | return iwl_mvm_get_valid_rx_ant(mvm); |
d2496221 DS |
109 | } |
110 | ||
8ca151b5 JB |
111 | static inline __le16 iwl_mvm_scan_rx_chain(struct iwl_mvm *mvm) |
112 | { | |
113 | u16 rx_chain; | |
91b05d10 | 114 | u8 rx_ant; |
8ca151b5 | 115 | |
d2496221 | 116 | rx_ant = iwl_mvm_scan_rx_ant(mvm); |
8ca151b5 JB |
117 | rx_chain = rx_ant << PHY_RX_CHAIN_VALID_POS; |
118 | rx_chain |= rx_ant << PHY_RX_CHAIN_FORCE_MIMO_SEL_POS; | |
119 | rx_chain |= rx_ant << PHY_RX_CHAIN_FORCE_SEL_POS; | |
120 | rx_chain |= 0x1 << PHY_RX_CHAIN_DRIVER_FORCE_POS; | |
121 | return cpu_to_le16(rx_chain); | |
122 | } | |
123 | ||
fb98be5e | 124 | static __le32 iwl_mvm_scan_rxon_flags(enum ieee80211_band band) |
8ca151b5 | 125 | { |
fb98be5e | 126 | if (band == IEEE80211_BAND_2GHZ) |
8ca151b5 JB |
127 | return cpu_to_le32(PHY_BAND_24); |
128 | else | |
129 | return cpu_to_le32(PHY_BAND_5); | |
130 | } | |
131 | ||
132 | static inline __le32 | |
133 | iwl_mvm_scan_rate_n_flags(struct iwl_mvm *mvm, enum ieee80211_band band, | |
134 | bool no_cck) | |
135 | { | |
136 | u32 tx_ant; | |
137 | ||
138 | mvm->scan_last_antenna_idx = | |
a0544272 | 139 | iwl_mvm_next_antenna(mvm, iwl_mvm_get_valid_tx_ant(mvm), |
8ca151b5 JB |
140 | mvm->scan_last_antenna_idx); |
141 | tx_ant = BIT(mvm->scan_last_antenna_idx) << RATE_MCS_ANT_POS; | |
142 | ||
143 | if (band == IEEE80211_BAND_2GHZ && !no_cck) | |
144 | return cpu_to_le32(IWL_RATE_1M_PLCP | RATE_MCS_CCK_MSK | | |
145 | tx_ant); | |
146 | else | |
147 | return cpu_to_le32(IWL_RATE_6M_PLCP | tx_ant); | |
148 | } | |
149 | ||
8ca151b5 JB |
150 | /* |
151 | * If req->n_ssids > 0, it means we should do an active scan. | |
152 | * In case of active scan w/o directed scan, we receive a zero-length SSID | |
153 | * just to notify that this scan is active and not passive. | |
154 | * In order to notify the FW of the number of SSIDs we wish to scan (including | |
155 | * the zero-length one), we need to set the corresponding bits in chan->type, | |
20f1a5de DS |
156 | * one for each SSID, and set the active bit (first). If the first SSID is |
157 | * already included in the probe template, so we need to set only | |
158 | * req->n_ssids - 1 bits in addition to the first bit. | |
8ca151b5 | 159 | */ |
3cae0734 DS |
160 | static u16 iwl_mvm_get_active_dwell(struct iwl_mvm *mvm, |
161 | enum ieee80211_band band, int n_ssids) | |
8ca151b5 | 162 | { |
3cae0734 DS |
163 | if (mvm->fw->ucode_capa.api[0] & IWL_UCODE_TLV_API_BASIC_DWELL) |
164 | return 10; | |
8ca151b5 | 165 | if (band == IEEE80211_BAND_2GHZ) |
39745337 DS |
166 | return 20 + 3 * (n_ssids + 1); |
167 | return 10 + 2 * (n_ssids + 1); | |
8ca151b5 JB |
168 | } |
169 | ||
3cae0734 DS |
170 | static u16 iwl_mvm_get_passive_dwell(struct iwl_mvm *mvm, |
171 | enum ieee80211_band band) | |
8ca151b5 | 172 | { |
3cae0734 DS |
173 | if (mvm->fw->ucode_capa.api[0] & IWL_UCODE_TLV_API_BASIC_DWELL) |
174 | return 110; | |
8ca151b5 JB |
175 | return band == IEEE80211_BAND_2GHZ ? 100 + 20 : 100 + 10; |
176 | } | |
177 | ||
8a110d9b AB |
178 | static void iwl_mvm_scan_condition_iterator(void *data, u8 *mac, |
179 | struct ieee80211_vif *vif) | |
61f6325d | 180 | { |
8a110d9b | 181 | struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif); |
c3f8d0a3 | 182 | int *global_cnt = data; |
61f6325d | 183 | |
1e2ebe0e DS |
184 | if (vif->type != NL80211_IFTYPE_P2P_DEVICE && mvmvif->phy_ctxt && |
185 | mvmvif->phy_ctxt->id < MAX_PHYS) | |
c3f8d0a3 | 186 | *global_cnt += 1; |
8a110d9b AB |
187 | } |
188 | ||
4b817051 LC |
189 | static void iwl_mvm_scan_calc_dwell(struct iwl_mvm *mvm, |
190 | struct ieee80211_vif *vif, | |
191 | struct iwl_mvm_scan_params *params) | |
8a110d9b | 192 | { |
c3f8d0a3 | 193 | int global_cnt = 0; |
50df8a30 | 194 | enum ieee80211_band band; |
2ce89cd6 | 195 | u8 frag_passive_dwell = 0; |
8a110d9b AB |
196 | |
197 | ieee80211_iterate_active_interfaces_atomic(mvm->hw, | |
198 | IEEE80211_IFACE_ITER_NORMAL, | |
199 | iwl_mvm_scan_condition_iterator, | |
c3f8d0a3 | 200 | &global_cnt); |
c3f8d0a3 | 201 | if (!global_cnt) |
ef67f18d AB |
202 | goto not_bound; |
203 | ||
2ce89cd6 | 204 | params->suspend_time = 30; |
44e9cd7e | 205 | params->max_out_time = 120; |
ef67f18d AB |
206 | |
207 | if (iwl_mvm_low_latency(mvm)) { | |
2ce89cd6 DS |
208 | if (mvm->fw->ucode_capa.api[0] & |
209 | IWL_UCODE_TLV_API_FRAGMENTED_SCAN) { | |
210 | params->suspend_time = 105; | |
c3f8d0a3 HD |
211 | /* |
212 | * If there is more than one active interface make | |
213 | * passive scan more fragmented. | |
214 | */ | |
ef17708e | 215 | frag_passive_dwell = 40; |
44e9cd7e | 216 | params->max_out_time = frag_passive_dwell; |
2ce89cd6 DS |
217 | } else { |
218 | params->suspend_time = 120; | |
219 | params->max_out_time = 120; | |
220 | } | |
221 | } | |
222 | ||
223 | if (frag_passive_dwell && (mvm->fw->ucode_capa.api[0] & | |
224 | IWL_UCODE_TLV_API_FRAGMENTED_SCAN)) { | |
225 | /* | |
226 | * P2P device scan should not be fragmented to avoid negative | |
227 | * impact on P2P device discovery. Configure max_out_time to be | |
228 | * equal to dwell time on passive channel. Take a longest | |
229 | * possible value, one that corresponds to 2GHz band | |
230 | */ | |
231 | if (vif->type == NL80211_IFTYPE_P2P_DEVICE) { | |
232 | u32 passive_dwell = | |
3cae0734 DS |
233 | iwl_mvm_get_passive_dwell(mvm, |
234 | IEEE80211_BAND_2GHZ); | |
2ce89cd6 DS |
235 | params->max_out_time = passive_dwell; |
236 | } else { | |
237 | params->passive_fragmented = true; | |
238 | } | |
50df8a30 | 239 | } |
8a110d9b | 240 | |
4b817051 | 241 | if ((params->flags & NL80211_SCAN_FLAG_LOW_PRIORITY) && |
c1537664 | 242 | (params->max_out_time > 200)) |
ab480030 JB |
243 | params->max_out_time = 200; |
244 | ||
ef67f18d AB |
245 | not_bound: |
246 | ||
50df8a30 | 247 | for (band = IEEE80211_BAND_2GHZ; band < IEEE80211_NUM_BANDS; band++) { |
2ce89cd6 | 248 | if (params->passive_fragmented) |
190f1029 DS |
249 | params->dwell[band].fragmented = frag_passive_dwell; |
250 | ||
251 | params->dwell[band].passive = iwl_mvm_get_passive_dwell(mvm, | |
252 | band); | |
4b817051 LC |
253 | params->dwell[band].active = |
254 | iwl_mvm_get_active_dwell(mvm, band, params->n_ssids); | |
50df8a30 | 255 | } |
0616c62c LC |
256 | |
257 | IWL_DEBUG_SCAN(mvm, | |
258 | "scan parameters: max_out_time %d, suspend_time %d, passive_fragmented %d\n", | |
259 | params->max_out_time, params->suspend_time, | |
260 | params->passive_fragmented); | |
261 | IWL_DEBUG_SCAN(mvm, | |
262 | "dwell[IEEE80211_BAND_2GHZ]: passive %d, active %d, fragmented %d\n", | |
263 | params->dwell[IEEE80211_BAND_2GHZ].passive, | |
264 | params->dwell[IEEE80211_BAND_2GHZ].active, | |
265 | params->dwell[IEEE80211_BAND_2GHZ].fragmented); | |
266 | IWL_DEBUG_SCAN(mvm, | |
267 | "dwell[IEEE80211_BAND_5GHZ]: passive %d, active %d, fragmented %d\n", | |
268 | params->dwell[IEEE80211_BAND_5GHZ].passive, | |
269 | params->dwell[IEEE80211_BAND_5GHZ].active, | |
270 | params->dwell[IEEE80211_BAND_5GHZ].fragmented); | |
61f6325d HD |
271 | } |
272 | ||
73897bd1 AO |
273 | static inline bool iwl_mvm_rrm_scan_needed(struct iwl_mvm *mvm) |
274 | { | |
275 | /* require rrm scan whenever the fw supports it */ | |
276 | return mvm->fw->ucode_capa.capa[0] & | |
277 | IWL_UCODE_TLV_CAPA_DS_PARAM_SET_IE_SUPPORT; | |
278 | } | |
279 | ||
999d2568 | 280 | static int iwl_mvm_max_scan_ie_fw_cmd_room(struct iwl_mvm *mvm) |
48849a41 AO |
281 | { |
282 | int max_probe_len; | |
283 | ||
1f940386 | 284 | max_probe_len = SCAN_OFFLOAD_PROBE_REQ_SIZE; |
48849a41 AO |
285 | |
286 | /* we create the 802.11 header and SSID element */ | |
287 | max_probe_len -= 24 + 2; | |
288 | ||
66dc5272 AO |
289 | /* DS parameter set element is added on 2.4GHZ band if required */ |
290 | if (iwl_mvm_rrm_scan_needed(mvm)) | |
291 | max_probe_len -= 3; | |
292 | ||
48849a41 AO |
293 | return max_probe_len; |
294 | } | |
295 | ||
999d2568 | 296 | int iwl_mvm_max_scan_ie_len(struct iwl_mvm *mvm) |
48849a41 | 297 | { |
999d2568 | 298 | int max_ie_len = iwl_mvm_max_scan_ie_fw_cmd_room(mvm); |
48849a41 | 299 | |
48849a41 AO |
300 | /* TODO: [BUG] This function should return the maximum allowed size of |
301 | * scan IEs, however the LMAC scan api contains both 2GHZ and 5GHZ IEs | |
302 | * in the same command. So the correct implementation of this function | |
303 | * is just iwl_mvm_max_scan_ie_fw_cmd_room() / 2. Currently the scan | |
304 | * command has only 512 bytes and it would leave us with about 240 | |
305 | * bytes for scan IEs, which is clearly not enough. So meanwhile | |
306 | * we will report an incorrect value. This may result in a failure to | |
307 | * issue a scan in unified_scan_lmac and unified_sched_scan_lmac | |
308 | * functions with -ENOBUFS, if a large enough probe will be provided. | |
309 | */ | |
310 | return max_ie_len; | |
311 | } | |
312 | ||
1fa1bcc0 AS |
313 | static u8 *iwl_mvm_dump_channel_list(struct iwl_scan_results_notif *res, |
314 | int num_res, u8 *buf, size_t buf_size) | |
315 | { | |
316 | int i; | |
317 | u8 *pos = buf, *end = buf + buf_size; | |
318 | ||
319 | for (i = 0; pos < end && i < num_res; i++) | |
320 | pos += snprintf(pos, end - pos, " %u", res[i].channel); | |
321 | ||
322 | /* terminate the string in case the buffer was too short */ | |
323 | *(buf + buf_size - 1) = '\0'; | |
324 | ||
325 | return buf; | |
326 | } | |
327 | ||
6e56f01d LC |
328 | int iwl_mvm_rx_lmac_scan_iter_complete_notif(struct iwl_mvm *mvm, |
329 | struct iwl_rx_cmd_buffer *rxb, | |
330 | struct iwl_device_cmd *cmd) | |
e5d74646 AB |
331 | { |
332 | struct iwl_rx_packet *pkt = rxb_addr(rxb); | |
1083fd73 | 333 | struct iwl_lmac_scan_complete_notif *notif = (void *)pkt->data; |
1fa1bcc0 | 334 | u8 buf[256]; |
e5d74646 AB |
335 | |
336 | IWL_DEBUG_SCAN(mvm, | |
1fa1bcc0 AS |
337 | "Scan offload iteration complete: status=0x%x scanned channels=%d channels list: %s\n", |
338 | notif->status, notif->scanned_channels, | |
339 | iwl_mvm_dump_channel_list(notif->results, | |
340 | notif->scanned_channels, buf, | |
341 | sizeof(buf))); | |
e5d74646 AB |
342 | return 0; |
343 | } | |
344 | ||
6e56f01d LC |
345 | int iwl_mvm_rx_scan_match_found(struct iwl_mvm *mvm, |
346 | struct iwl_rx_cmd_buffer *rxb, | |
347 | struct iwl_device_cmd *cmd) | |
35a000b7 | 348 | { |
d2496221 DS |
349 | IWL_DEBUG_SCAN(mvm, "Scheduled scan results\n"); |
350 | ieee80211_sched_scan_results(mvm->hw); | |
35a000b7 DS |
351 | |
352 | return 0; | |
353 | } | |
354 | ||
6e56f01d LC |
355 | int iwl_mvm_rx_lmac_scan_complete_notif(struct iwl_mvm *mvm, |
356 | struct iwl_rx_cmd_buffer *rxb, | |
357 | struct iwl_device_cmd *cmd) | |
35a000b7 DS |
358 | { |
359 | struct iwl_rx_packet *pkt = rxb_addr(rxb); | |
9af91f46 LC |
360 | struct iwl_periodic_scan_complete *scan_notif = (void *)pkt->data; |
361 | bool aborted = (scan_notif->status == IWL_SCAN_OFFLOAD_ABORTED); | |
362 | bool ebs_successful = (scan_notif->ebs_status == IWL_SCAN_EBS_SUCCESS); | |
fb98be5e | 363 | |
a6623e84 JB |
364 | /* scan status must be locked for proper checking */ |
365 | lockdep_assert_held(&mvm->mutex); | |
366 | ||
9af91f46 LC |
367 | /* We first check if we were stopping a scan, in which case we |
368 | * just clear the stopping flag. Then we check if it was a | |
369 | * firmware initiated stop, in which case we need to inform | |
370 | * mac80211. | |
371 | * Note that we can have a stopping and a running scan | |
372 | * simultaneously, but we can't have two different types of | |
373 | * scans stopping or running at the same time (since LMAC | |
374 | * doesn't support it). | |
375 | */ | |
376 | ||
377 | if (mvm->scan_status & IWL_MVM_SCAN_STOPPING_SCHED) { | |
378 | WARN_ON_ONCE(mvm->scan_status & IWL_MVM_SCAN_STOPPING_REGULAR); | |
379 | ||
380 | IWL_DEBUG_SCAN(mvm, "Scheduled scan %s, EBS status %s\n", | |
381 | aborted ? "aborted" : "completed", | |
382 | ebs_successful ? "successful" : "failed"); | |
e820c2da | 383 | |
9af91f46 LC |
384 | mvm->scan_status &= ~IWL_MVM_SCAN_STOPPING_SCHED; |
385 | } else if (mvm->scan_status & IWL_MVM_SCAN_STOPPING_REGULAR) { | |
386 | IWL_DEBUG_SCAN(mvm, "Regular scan %s, EBS status %s\n", | |
387 | aborted ? "aborted" : "completed", | |
388 | ebs_successful ? "successful" : "failed"); | |
35a000b7 | 389 | |
9af91f46 LC |
390 | mvm->scan_status &= ~IWL_MVM_SCAN_STOPPING_REGULAR; |
391 | } else if (mvm->scan_status & IWL_MVM_SCAN_SCHED) { | |
392 | WARN_ON_ONCE(mvm->scan_status & IWL_MVM_SCAN_REGULAR); | |
393 | ||
394 | IWL_DEBUG_SCAN(mvm, "Scheduled scan %s, EBS status %s (FW)\n", | |
395 | aborted ? "aborted" : "completed", | |
396 | ebs_successful ? "successful" : "failed"); | |
397 | ||
398 | mvm->scan_status &= ~IWL_MVM_SCAN_SCHED; | |
33ea27f6 | 399 | ieee80211_sched_scan_stopped(mvm->hw); |
9af91f46 LC |
400 | } else if (mvm->scan_status & IWL_MVM_SCAN_REGULAR) { |
401 | IWL_DEBUG_SCAN(mvm, "Regular scan %s, EBS status %s (FW)\n", | |
402 | aborted ? "aborted" : "completed", | |
403 | ebs_successful ? "successful" : "failed"); | |
404 | ||
405 | mvm->scan_status &= ~IWL_MVM_SCAN_REGULAR; | |
fb98be5e | 406 | ieee80211_scan_completed(mvm->hw, |
1f940386 | 407 | scan_notif->status == IWL_SCAN_OFFLOAD_ABORTED); |
4ff78181 | 408 | iwl_mvm_unref(mvm, IWL_MVM_REF_SCAN); |
33ea27f6 | 409 | } |
35a000b7 | 410 | |
9af91f46 | 411 | mvm->last_ebs_successful = ebs_successful; |
e820c2da | 412 | |
35a000b7 DS |
413 | return 0; |
414 | } | |
415 | ||
35a000b7 DS |
416 | static int iwl_ssid_exist(u8 *ssid, u8 ssid_len, struct iwl_ssid_ie *ssid_list) |
417 | { | |
418 | int i; | |
419 | ||
420 | for (i = 0; i < PROBE_OPTION_MAX; i++) { | |
421 | if (!ssid_list[i].len) | |
422 | break; | |
423 | if (ssid_list[i].len == ssid_len && | |
424 | !memcmp(ssid_list->ssid, ssid, ssid_len)) | |
425 | return i; | |
426 | } | |
427 | return -1; | |
428 | } | |
429 | ||
e2ec4f6d LC |
430 | /* We insert the SSIDs in an inverted order, because the FW will |
431 | * invert it back. | |
432 | */ | |
433 | static void iwl_scan_build_ssids(struct iwl_mvm_scan_params *params, | |
434 | struct iwl_ssid_ie *ssids, | |
435 | u32 *ssid_bitmap) | |
35a000b7 DS |
436 | { |
437 | int i, j; | |
438 | int index; | |
439 | ||
440 | /* | |
441 | * copy SSIDs from match list. | |
442 | * iwl_config_sched_scan_profiles() uses the order of these ssids to | |
443 | * config match list. | |
444 | */ | |
1c1b5b26 LC |
445 | for (i = 0, j = params->n_match_sets - 1; |
446 | j >= 0 && i < PROBE_OPTION_MAX; | |
447 | i++, j--) { | |
ea73cbce | 448 | /* skip empty SSID matchsets */ |
1c1b5b26 | 449 | if (!params->match_sets[j].ssid.ssid_len) |
ea73cbce | 450 | continue; |
e2ec4f6d LC |
451 | ssids[i].id = WLAN_EID_SSID; |
452 | ssids[i].len = params->match_sets[j].ssid.ssid_len; | |
453 | memcpy(ssids[i].ssid, params->match_sets[j].ssid.ssid, | |
454 | ssids[i].len); | |
35a000b7 DS |
455 | } |
456 | ||
457 | /* add SSIDs from scan SSID list */ | |
458 | *ssid_bitmap = 0; | |
1c1b5b26 LC |
459 | for (j = params->n_ssids - 1; |
460 | j >= 0 && i < PROBE_OPTION_MAX; | |
461 | i++, j--) { | |
f7b788b4 LC |
462 | index = iwl_ssid_exist(params->ssids[j].ssid, |
463 | params->ssids[j].ssid_len, | |
e2ec4f6d | 464 | ssids); |
35a000b7 | 465 | if (index < 0) { |
e2ec4f6d LC |
466 | ssids[i].id = WLAN_EID_SSID; |
467 | ssids[i].len = params->ssids[j].ssid_len; | |
468 | memcpy(ssids[i].ssid, params->ssids[j].ssid, | |
469 | ssids[i].len); | |
470 | *ssid_bitmap |= BIT(i); | |
35a000b7 | 471 | } else { |
e2ec4f6d | 472 | *ssid_bitmap |= BIT(index); |
35a000b7 DS |
473 | } |
474 | } | |
475 | } | |
476 | ||
416c9b50 LC |
477 | static int |
478 | iwl_mvm_config_sched_scan_profiles(struct iwl_mvm *mvm, | |
479 | struct cfg80211_sched_scan_request *req) | |
35a000b7 DS |
480 | { |
481 | struct iwl_scan_offload_profile *profile; | |
482 | struct iwl_scan_offload_profile_cfg *profile_cfg; | |
483 | struct iwl_scan_offload_blacklist *blacklist; | |
484 | struct iwl_host_cmd cmd = { | |
485 | .id = SCAN_OFFLOAD_UPDATE_PROFILES_CMD, | |
35a000b7 DS |
486 | .len[1] = sizeof(*profile_cfg), |
487 | .dataflags[0] = IWL_HCMD_DFL_NOCOPY, | |
488 | .dataflags[1] = IWL_HCMD_DFL_NOCOPY, | |
489 | }; | |
490 | int blacklist_len; | |
491 | int i; | |
492 | int ret; | |
493 | ||
494 | if (WARN_ON(req->n_match_sets > IWL_SCAN_MAX_PROFILES)) | |
495 | return -EIO; | |
496 | ||
497 | if (mvm->fw->ucode_capa.flags & IWL_UCODE_TLV_FLAGS_SHORT_BL) | |
498 | blacklist_len = IWL_SCAN_SHORT_BLACKLIST_LEN; | |
499 | else | |
500 | blacklist_len = IWL_SCAN_MAX_BLACKLIST_LEN; | |
501 | ||
502 | blacklist = kzalloc(sizeof(*blacklist) * blacklist_len, GFP_KERNEL); | |
503 | if (!blacklist) | |
504 | return -ENOMEM; | |
505 | ||
506 | profile_cfg = kzalloc(sizeof(*profile_cfg), GFP_KERNEL); | |
507 | if (!profile_cfg) { | |
508 | ret = -ENOMEM; | |
509 | goto free_blacklist; | |
510 | } | |
511 | ||
512 | cmd.data[0] = blacklist; | |
513 | cmd.len[0] = sizeof(*blacklist) * blacklist_len; | |
514 | cmd.data[1] = profile_cfg; | |
515 | ||
516 | /* No blacklist configuration */ | |
517 | ||
518 | profile_cfg->num_profiles = req->n_match_sets; | |
519 | profile_cfg->active_clients = SCAN_CLIENT_SCHED_SCAN; | |
520 | profile_cfg->pass_match = SCAN_CLIENT_SCHED_SCAN; | |
521 | profile_cfg->match_notify = SCAN_CLIENT_SCHED_SCAN; | |
6e0bbe5e DS |
522 | if (!req->n_match_sets || !req->match_sets[0].ssid.ssid_len) |
523 | profile_cfg->any_beacon_notify = SCAN_CLIENT_SCHED_SCAN; | |
35a000b7 DS |
524 | |
525 | for (i = 0; i < req->n_match_sets; i++) { | |
526 | profile = &profile_cfg->profiles[i]; | |
527 | profile->ssid_index = i; | |
528 | /* Support any cipher and auth algorithm */ | |
529 | profile->unicast_cipher = 0xff; | |
530 | profile->auth_alg = 0xff; | |
531 | profile->network_type = IWL_NETWORK_TYPE_ANY; | |
532 | profile->band_selection = IWL_SCAN_OFFLOAD_SELECT_ANY; | |
533 | profile->client_bitmap = SCAN_CLIENT_SCHED_SCAN; | |
534 | } | |
535 | ||
536 | IWL_DEBUG_SCAN(mvm, "Sending scheduled scan profile config\n"); | |
537 | ||
538 | ret = iwl_mvm_send_cmd(mvm, &cmd); | |
539 | kfree(profile_cfg); | |
540 | free_blacklist: | |
541 | kfree(blacklist); | |
542 | ||
543 | return ret; | |
544 | } | |
545 | ||
d2496221 DS |
546 | static bool iwl_mvm_scan_pass_all(struct iwl_mvm *mvm, |
547 | struct cfg80211_sched_scan_request *req) | |
548 | { | |
549 | if (req->n_match_sets && req->match_sets[0].ssid.ssid_len) { | |
550 | IWL_DEBUG_SCAN(mvm, | |
551 | "Sending scheduled scan with filtering, n_match_sets %d\n", | |
552 | req->n_match_sets); | |
553 | return false; | |
554 | } | |
555 | ||
556 | IWL_DEBUG_SCAN(mvm, "Sending Scheduled scan without filtering\n"); | |
557 | return true; | |
558 | } | |
559 | ||
6e56f01d | 560 | static int iwl_mvm_send_lmac_scan_abort(struct iwl_mvm *mvm) |
35a000b7 DS |
561 | { |
562 | int ret; | |
563 | struct iwl_host_cmd cmd = { | |
564 | .id = SCAN_OFFLOAD_ABORT_CMD, | |
35a000b7 DS |
565 | }; |
566 | u32 status; | |
567 | ||
35a000b7 DS |
568 | ret = iwl_mvm_send_cmd_status(mvm, &cmd, &status); |
569 | if (ret) | |
570 | return ret; | |
571 | ||
572 | if (status != CAN_ABORT_STATUS) { | |
573 | /* | |
574 | * The scan abort will return 1 for success or | |
575 | * 2 for "failure". A failure condition can be | |
576 | * due to simply not being in an active scan which | |
577 | * can occur if we send the scan abort before the | |
578 | * microcode has notified us that a scan is completed. | |
579 | */ | |
580 | IWL_DEBUG_SCAN(mvm, "SCAN OFFLOAD ABORT ret %d.\n", status); | |
33ea27f6 | 581 | ret = -ENOENT; |
35a000b7 DS |
582 | } |
583 | ||
584 | return ret; | |
585 | } | |
586 | ||
62a6b9c8 | 587 | static int iwl_mvm_lmac_scan_stop(struct iwl_mvm *mvm, int type) |
35a000b7 DS |
588 | { |
589 | int ret; | |
33ea27f6 AN |
590 | struct iwl_notification_wait wait_scan_done; |
591 | static const u8 scan_done_notif[] = { SCAN_OFFLOAD_COMPLETE, }; | |
62a6b9c8 | 592 | bool sched = type & IWL_MVM_SCAN_SCHED; |
35a000b7 DS |
593 | |
594 | lockdep_assert_held(&mvm->mutex); | |
595 | ||
33ea27f6 AN |
596 | iwl_init_notification_wait(&mvm->notif_wait, &wait_scan_done, |
597 | scan_done_notif, | |
598 | ARRAY_SIZE(scan_done_notif), | |
599 | NULL, NULL); | |
600 | ||
6e56f01d | 601 | ret = iwl_mvm_send_lmac_scan_abort(mvm); |
33ea27f6 | 602 | if (ret) { |
fb98be5e DS |
603 | IWL_DEBUG_SCAN(mvm, "Send stop %sscan failed %d\n", |
604 | sched ? "offloaded " : "", ret); | |
33ea27f6 | 605 | iwl_remove_notification(&mvm->notif_wait, &wait_scan_done); |
54331db9 | 606 | goto out; |
33ea27f6 AN |
607 | } |
608 | ||
fb98be5e | 609 | IWL_DEBUG_SCAN(mvm, "Successfully sent stop %sscan\n", |
9af91f46 | 610 | sched ? "scheduled " : ""); |
33ea27f6 AN |
611 | |
612 | ret = iwl_wait_notification(&mvm->notif_wait, &wait_scan_done, 1 * HZ); | |
54331db9 | 613 | out: |
54331db9 | 614 | return ret; |
35a000b7 | 615 | } |
fb98be5e | 616 | |
65ff556b LC |
617 | static void iwl_mvm_scan_fill_tx_cmd(struct iwl_mvm *mvm, |
618 | struct iwl_scan_req_tx_cmd *tx_cmd, | |
619 | bool no_cck) | |
fb98be5e DS |
620 | { |
621 | tx_cmd[0].tx_flags = cpu_to_le32(TX_CMD_FLG_SEQ_CTL | | |
622 | TX_CMD_FLG_BT_DIS); | |
623 | tx_cmd[0].rate_n_flags = iwl_mvm_scan_rate_n_flags(mvm, | |
624 | IEEE80211_BAND_2GHZ, | |
625 | no_cck); | |
626 | tx_cmd[0].sta_id = mvm->aux_sta.sta_id; | |
627 | ||
628 | tx_cmd[1].tx_flags = cpu_to_le32(TX_CMD_FLG_SEQ_CTL | | |
629 | TX_CMD_FLG_BT_DIS); | |
630 | tx_cmd[1].rate_n_flags = iwl_mvm_scan_rate_n_flags(mvm, | |
631 | IEEE80211_BAND_5GHZ, | |
632 | no_cck); | |
633 | tx_cmd[1].sta_id = mvm->aux_sta.sta_id; | |
634 | } | |
635 | ||
636 | static void | |
637 | iwl_mvm_lmac_scan_cfg_channels(struct iwl_mvm *mvm, | |
638 | struct ieee80211_channel **channels, | |
639 | int n_channels, u32 ssid_bitmap, | |
65ff556b | 640 | struct iwl_scan_req_lmac *cmd) |
fb98be5e DS |
641 | { |
642 | struct iwl_scan_channel_cfg_lmac *channel_cfg = (void *)&cmd->data; | |
643 | int i; | |
644 | ||
645 | for (i = 0; i < n_channels; i++) { | |
646 | channel_cfg[i].channel_num = | |
647 | cpu_to_le16(channels[i]->hw_value); | |
648 | channel_cfg[i].iter_count = cpu_to_le16(1); | |
649 | channel_cfg[i].iter_interval = 0; | |
650 | channel_cfg[i].flags = | |
651 | cpu_to_le32(IWL_UNIFIED_SCAN_CHANNEL_PARTIAL | | |
652 | ssid_bitmap); | |
653 | } | |
654 | } | |
655 | ||
66dc5272 AO |
656 | static u8 *iwl_mvm_copy_and_insert_ds_elem(struct iwl_mvm *mvm, const u8 *ies, |
657 | size_t len, u8 *const pos) | |
658 | { | |
659 | static const u8 before_ds_params[] = { | |
660 | WLAN_EID_SSID, | |
661 | WLAN_EID_SUPP_RATES, | |
662 | WLAN_EID_REQUEST, | |
663 | WLAN_EID_EXT_SUPP_RATES, | |
664 | }; | |
665 | size_t offs; | |
666 | u8 *newpos = pos; | |
667 | ||
668 | if (!iwl_mvm_rrm_scan_needed(mvm)) { | |
669 | memcpy(newpos, ies, len); | |
670 | return newpos + len; | |
671 | } | |
672 | ||
673 | offs = ieee80211_ie_split(ies, len, | |
674 | before_ds_params, | |
675 | ARRAY_SIZE(before_ds_params), | |
676 | 0); | |
677 | ||
678 | memcpy(newpos, ies, offs); | |
679 | newpos += offs; | |
680 | ||
681 | /* Add a placeholder for DS Parameter Set element */ | |
682 | *newpos++ = WLAN_EID_DS_PARAMS; | |
683 | *newpos++ = 1; | |
684 | *newpos++ = 0; | |
685 | ||
686 | memcpy(newpos, ies + offs, len - offs); | |
687 | newpos += len - offs; | |
688 | ||
689 | return newpos; | |
690 | } | |
691 | ||
fb98be5e | 692 | static void |
65ff556b LC |
693 | iwl_mvm_build_scan_probe(struct iwl_mvm *mvm, struct ieee80211_vif *vif, |
694 | struct ieee80211_scan_ies *ies, | |
45d1b12e | 695 | struct iwl_mvm_scan_params *params) |
fb98be5e | 696 | { |
45d1b12e | 697 | struct ieee80211_mgmt *frame = (void *)params->preq.buf; |
66dc5272 | 698 | u8 *pos, *newpos; |
45d1b12e LC |
699 | const u8 *mac_addr = params->flags & NL80211_SCAN_FLAG_RANDOM_ADDR ? |
700 | params->mac_addr : NULL; | |
fb98be5e | 701 | |
effd05ac JB |
702 | /* |
703 | * Unfortunately, right now the offload scan doesn't support randomising | |
704 | * within the firmware, so until the firmware API is ready we implement | |
705 | * it in the driver. This means that the scan iterations won't really be | |
706 | * random, only when it's restarted, but at least that helps a bit. | |
707 | */ | |
708 | if (mac_addr) | |
45d1b12e LC |
709 | get_random_mask_addr(frame->sa, mac_addr, |
710 | params->mac_addr_mask); | |
effd05ac JB |
711 | else |
712 | memcpy(frame->sa, vif->addr, ETH_ALEN); | |
713 | ||
fb98be5e DS |
714 | frame->frame_control = cpu_to_le16(IEEE80211_STYPE_PROBE_REQ); |
715 | eth_broadcast_addr(frame->da); | |
fb98be5e DS |
716 | eth_broadcast_addr(frame->bssid); |
717 | frame->seq_ctrl = 0; | |
718 | ||
719 | pos = frame->u.probe_req.variable; | |
720 | *pos++ = WLAN_EID_SSID; | |
721 | *pos++ = 0; | |
722 | ||
45d1b12e LC |
723 | params->preq.mac_header.offset = 0; |
724 | params->preq.mac_header.len = cpu_to_le16(24 + 2); | |
fb98be5e | 725 | |
66dc5272 AO |
726 | /* Insert ds parameter set element on 2.4 GHz band */ |
727 | newpos = iwl_mvm_copy_and_insert_ds_elem(mvm, | |
728 | ies->ies[IEEE80211_BAND_2GHZ], | |
729 | ies->len[IEEE80211_BAND_2GHZ], | |
730 | pos); | |
45d1b12e LC |
731 | params->preq.band_data[0].offset = cpu_to_le16(pos - params->preq.buf); |
732 | params->preq.band_data[0].len = cpu_to_le16(newpos - pos); | |
66dc5272 | 733 | pos = newpos; |
fb98be5e DS |
734 | |
735 | memcpy(pos, ies->ies[IEEE80211_BAND_5GHZ], | |
736 | ies->len[IEEE80211_BAND_5GHZ]); | |
45d1b12e LC |
737 | params->preq.band_data[1].offset = cpu_to_le16(pos - params->preq.buf); |
738 | params->preq.band_data[1].len = | |
739 | cpu_to_le16(ies->len[IEEE80211_BAND_5GHZ]); | |
fb98be5e DS |
740 | pos += ies->len[IEEE80211_BAND_5GHZ]; |
741 | ||
742 | memcpy(pos, ies->common_ies, ies->common_ie_len); | |
45d1b12e LC |
743 | params->preq.common_data.offset = cpu_to_le16(pos - params->preq.buf); |
744 | params->preq.common_data.len = cpu_to_le16(ies->common_ie_len); | |
fb98be5e DS |
745 | } |
746 | ||
d7afbfc4 AS |
747 | static __le32 iwl_mvm_scan_priority(struct iwl_mvm *mvm, |
748 | enum iwl_scan_priority_ext prio) | |
749 | { | |
750 | if (mvm->fw->ucode_capa.api[0] & IWL_UCODE_TLV_API_EXT_SCAN_PRIORITY) | |
751 | return cpu_to_le32(prio); | |
752 | ||
753 | if (prio <= IWL_SCAN_PRIORITY_EXT_2) | |
754 | return cpu_to_le32(IWL_SCAN_PRIORITY_LOW); | |
755 | ||
756 | if (prio <= IWL_SCAN_PRIORITY_EXT_4) | |
757 | return cpu_to_le32(IWL_SCAN_PRIORITY_MEDIUM); | |
758 | ||
759 | return cpu_to_le32(IWL_SCAN_PRIORITY_HIGH); | |
760 | } | |
761 | ||
133c8259 LC |
762 | static void iwl_mvm_scan_lmac_dwell(struct iwl_mvm *mvm, |
763 | struct iwl_scan_req_lmac *cmd, | |
764 | struct iwl_mvm_scan_params *params) | |
fb98be5e | 765 | { |
2ce89cd6 DS |
766 | cmd->active_dwell = params->dwell[IEEE80211_BAND_2GHZ].active; |
767 | cmd->passive_dwell = params->dwell[IEEE80211_BAND_2GHZ].passive; | |
768 | if (params->passive_fragmented) | |
769 | cmd->fragmented_dwell = | |
190f1029 | 770 | params->dwell[IEEE80211_BAND_2GHZ].fragmented; |
fb98be5e DS |
771 | cmd->max_out_time = cpu_to_le32(params->max_out_time); |
772 | cmd->suspend_time = cpu_to_le32(params->suspend_time); | |
d7afbfc4 | 773 | cmd->scan_prio = iwl_mvm_scan_priority(mvm, IWL_SCAN_PRIORITY_EXT_6); |
fb98be5e DS |
774 | } |
775 | ||
999d2568 LC |
776 | static inline bool iwl_mvm_scan_fits(struct iwl_mvm *mvm, int n_ssids, |
777 | struct ieee80211_scan_ies *ies, | |
778 | int n_channels) | |
779 | { | |
780 | return ((n_ssids <= PROBE_OPTION_MAX) && | |
781 | (n_channels <= mvm->fw->ucode_capa.n_scan_channels) & | |
782 | (ies->common_ie_len + | |
783 | ies->len[NL80211_BAND_2GHZ] + | |
784 | ies->len[NL80211_BAND_5GHZ] <= | |
785 | iwl_mvm_max_scan_ie_fw_cmd_room(mvm))); | |
786 | } | |
787 | ||
7d7de1e9 | 788 | static inline bool iwl_mvm_scan_use_ebs(struct iwl_mvm *mvm, int n_iterations) |
fb98be5e | 789 | { |
7d7de1e9 | 790 | const struct iwl_ucode_capabilities *capa = &mvm->fw->ucode_capa; |
fb98be5e | 791 | |
7d7de1e9 LC |
792 | /* We can only use EBS if: |
793 | * 1. the feature is supported; | |
794 | * 2. the last EBS was successful; | |
795 | * 3. if only single scan, the single scan EBS API is supported. | |
796 | */ | |
797 | return ((capa->flags & IWL_UCODE_TLV_FLAGS_EBS_SUPPORT) && | |
798 | mvm->last_ebs_successful && | |
799 | (n_iterations > 1 || | |
800 | (capa->api[0] & IWL_UCODE_TLV_API_SINGLE_SCAN_EBS))); | |
fb98be5e DS |
801 | } |
802 | ||
6f4dcc76 LC |
803 | static int iwl_mvm_scan_total_iterations(struct iwl_mvm_scan_params *params) |
804 | { | |
805 | return params->schedule[0].iterations + params->schedule[1].iterations; | |
806 | } | |
807 | ||
87515408 LC |
808 | static int iwl_mvm_scan_lmac_flags(struct iwl_mvm *mvm, |
809 | struct iwl_mvm_scan_params *params) | |
810 | { | |
811 | int flags = 0; | |
812 | ||
813 | if (params->n_ssids == 0) | |
814 | flags |= IWL_MVM_LMAC_SCAN_FLAG_PASSIVE; | |
815 | ||
816 | if (params->n_ssids == 1 && params->ssids[0].ssid_len != 0) | |
817 | flags |= IWL_MVM_LMAC_SCAN_FLAG_PRE_CONNECTION; | |
818 | ||
819 | if (params->passive_fragmented) | |
820 | flags |= IWL_MVM_LMAC_SCAN_FLAG_FRAGMENTED; | |
821 | ||
822 | if (iwl_mvm_rrm_scan_needed(mvm)) | |
823 | flags |= IWL_MVM_LMAC_SCAN_FLAGS_RRM_ENABLED; | |
824 | ||
825 | if (params->pass_all) | |
826 | flags |= IWL_MVM_LMAC_SCAN_FLAG_PASS_ALL; | |
827 | else | |
828 | flags |= IWL_MVM_LMAC_SCAN_FLAG_MATCH; | |
829 | ||
830 | #ifdef CONFIG_IWLWIFI_DEBUGFS | |
831 | if (mvm->scan_iter_notif_enabled) | |
832 | flags |= IWL_MVM_LMAC_SCAN_FLAG_ITER_COMPLETE; | |
833 | #endif | |
834 | ||
835 | return flags; | |
836 | } | |
837 | ||
7d7de1e9 LC |
838 | static int iwl_mvm_scan_lmac(struct iwl_mvm *mvm, struct ieee80211_vif *vif, |
839 | struct iwl_mvm_scan_params *params) | |
fb98be5e | 840 | { |
65ff556b | 841 | struct iwl_scan_req_lmac *cmd = mvm->scan_cmd; |
45d1b12e LC |
842 | struct iwl_scan_probe_req *preq = |
843 | (void *)(cmd->data + sizeof(struct iwl_scan_channel_cfg_lmac) * | |
844 | mvm->fw->ucode_capa.n_scan_channels); | |
87515408 | 845 | u32 ssid_bitmap = 0; |
6f4dcc76 | 846 | int n_iterations = iwl_mvm_scan_total_iterations(params); |
fb98be5e DS |
847 | |
848 | lockdep_assert_held(&mvm->mutex); | |
849 | ||
133c8259 LC |
850 | memset(cmd, 0, ksize(cmd)); |
851 | ||
852 | iwl_mvm_scan_lmac_dwell(mvm, cmd, params); | |
fb98be5e | 853 | |
133c8259 LC |
854 | cmd->rx_chain_select = iwl_mvm_scan_rx_chain(mvm); |
855 | cmd->iter_num = cpu_to_le32(1); | |
f7b788b4 | 856 | cmd->n_channels = (u8)params->n_channels; |
fb98be5e | 857 | |
f7b788b4 | 858 | cmd->delay = cpu_to_le32(params->delay); |
2250fd94 | 859 | |
87515408 | 860 | cmd->scan_flags = cpu_to_le32(iwl_mvm_scan_lmac_flags(mvm, params)); |
fb98be5e | 861 | |
f7b788b4 | 862 | cmd->flags = iwl_mvm_scan_rxon_flags(params->channels[0]->band); |
fb98be5e DS |
863 | cmd->filter_flags = cpu_to_le32(MAC_FILTER_ACCEPT_GRP | |
864 | MAC_FILTER_IN_BEACON); | |
f7b788b4 | 865 | iwl_mvm_scan_fill_tx_cmd(mvm, cmd->tx_cmd, params->no_cck); |
e2ec4f6d LC |
866 | iwl_scan_build_ssids(params, cmd->direct_scan, &ssid_bitmap); |
867 | ||
868 | /* this API uses bits 1-20 instead of 0-19 */ | |
869 | ssid_bitmap <<= 1; | |
fb98be5e | 870 | |
f7b788b4 | 871 | cmd->schedule[0].delay = cpu_to_le16(params->interval); |
cf5d317d LC |
872 | cmd->schedule[0].iterations = params->schedule[0].iterations; |
873 | cmd->schedule[0].full_scan_mul = params->schedule[0].full_scan_mul; | |
f7b788b4 | 874 | cmd->schedule[1].delay = cpu_to_le16(params->interval); |
cf5d317d LC |
875 | cmd->schedule[1].iterations = params->schedule[1].iterations; |
876 | cmd->schedule[1].full_scan_mul = params->schedule[1].iterations; | |
fb98be5e | 877 | |
7d7de1e9 | 878 | if (iwl_mvm_scan_use_ebs(mvm, n_iterations)) { |
1f9c418f DS |
879 | cmd->channel_opt[0].flags = |
880 | cpu_to_le16(IWL_SCAN_CHANNEL_FLAG_EBS | | |
881 | IWL_SCAN_CHANNEL_FLAG_EBS_ACCURATE | | |
882 | IWL_SCAN_CHANNEL_FLAG_CACHE_ADD); | |
883 | cmd->channel_opt[0].non_ebs_ratio = | |
884 | cpu_to_le16(IWL_DENSE_EBS_SCAN_RATIO); | |
885 | cmd->channel_opt[1].flags = | |
886 | cpu_to_le16(IWL_SCAN_CHANNEL_FLAG_EBS | | |
887 | IWL_SCAN_CHANNEL_FLAG_EBS_ACCURATE | | |
888 | IWL_SCAN_CHANNEL_FLAG_CACHE_ADD); | |
889 | cmd->channel_opt[1].non_ebs_ratio = | |
890 | cpu_to_le16(IWL_SPARSE_EBS_SCAN_RATIO); | |
891 | } | |
892 | ||
f7b788b4 LC |
893 | iwl_mvm_lmac_scan_cfg_channels(mvm, params->channels, |
894 | params->n_channels, ssid_bitmap, cmd); | |
fb98be5e | 895 | |
45d1b12e | 896 | *preq = params->preq; |
fb98be5e | 897 | |
8df3e68f | 898 | return 0; |
fb98be5e DS |
899 | } |
900 | ||
d2496221 DS |
901 | static int rate_to_scan_rate_flag(unsigned int rate) |
902 | { | |
903 | static const int rate_to_scan_rate[IWL_RATE_COUNT] = { | |
904 | [IWL_RATE_1M_INDEX] = SCAN_CONFIG_RATE_1M, | |
905 | [IWL_RATE_2M_INDEX] = SCAN_CONFIG_RATE_2M, | |
906 | [IWL_RATE_5M_INDEX] = SCAN_CONFIG_RATE_5M, | |
907 | [IWL_RATE_11M_INDEX] = SCAN_CONFIG_RATE_11M, | |
908 | [IWL_RATE_6M_INDEX] = SCAN_CONFIG_RATE_6M, | |
909 | [IWL_RATE_9M_INDEX] = SCAN_CONFIG_RATE_9M, | |
910 | [IWL_RATE_12M_INDEX] = SCAN_CONFIG_RATE_12M, | |
911 | [IWL_RATE_18M_INDEX] = SCAN_CONFIG_RATE_18M, | |
912 | [IWL_RATE_24M_INDEX] = SCAN_CONFIG_RATE_24M, | |
913 | [IWL_RATE_36M_INDEX] = SCAN_CONFIG_RATE_36M, | |
914 | [IWL_RATE_48M_INDEX] = SCAN_CONFIG_RATE_48M, | |
915 | [IWL_RATE_54M_INDEX] = SCAN_CONFIG_RATE_54M, | |
916 | }; | |
917 | ||
918 | return rate_to_scan_rate[rate]; | |
919 | } | |
920 | ||
921 | static __le32 iwl_mvm_scan_config_rates(struct iwl_mvm *mvm) | |
922 | { | |
923 | struct ieee80211_supported_band *band; | |
924 | unsigned int rates = 0; | |
925 | int i; | |
926 | ||
927 | band = &mvm->nvm_data->bands[IEEE80211_BAND_2GHZ]; | |
928 | for (i = 0; i < band->n_bitrates; i++) | |
929 | rates |= rate_to_scan_rate_flag(band->bitrates[i].hw_value); | |
930 | band = &mvm->nvm_data->bands[IEEE80211_BAND_5GHZ]; | |
931 | for (i = 0; i < band->n_bitrates; i++) | |
932 | rates |= rate_to_scan_rate_flag(band->bitrates[i].hw_value); | |
933 | ||
934 | /* Set both basic rates and supported rates */ | |
935 | rates |= SCAN_CONFIG_SUPPORTED_RATE(rates); | |
936 | ||
937 | return cpu_to_le32(rates); | |
938 | } | |
939 | ||
940 | int iwl_mvm_config_scan(struct iwl_mvm *mvm) | |
941 | { | |
942 | ||
943 | struct iwl_scan_config *scan_config; | |
944 | struct ieee80211_supported_band *band; | |
945 | int num_channels = | |
946 | mvm->nvm_data->bands[IEEE80211_BAND_2GHZ].n_channels + | |
947 | mvm->nvm_data->bands[IEEE80211_BAND_5GHZ].n_channels; | |
948 | int ret, i, j = 0, cmd_size, data_size; | |
949 | struct iwl_host_cmd cmd = { | |
950 | .id = SCAN_CFG_CMD, | |
951 | }; | |
952 | ||
953 | if (WARN_ON(num_channels > mvm->fw->ucode_capa.n_scan_channels)) | |
954 | return -ENOBUFS; | |
955 | ||
956 | cmd_size = sizeof(*scan_config) + mvm->fw->ucode_capa.n_scan_channels; | |
957 | ||
958 | scan_config = kzalloc(cmd_size, GFP_KERNEL); | |
959 | if (!scan_config) | |
960 | return -ENOMEM; | |
961 | ||
962 | data_size = cmd_size - sizeof(struct iwl_mvm_umac_cmd_hdr); | |
963 | scan_config->hdr.size = cpu_to_le16(data_size); | |
964 | scan_config->flags = cpu_to_le32(SCAN_CONFIG_FLAG_ACTIVATE | | |
965 | SCAN_CONFIG_FLAG_ALLOW_CHUB_REQS | | |
966 | SCAN_CONFIG_FLAG_SET_TX_CHAINS | | |
967 | SCAN_CONFIG_FLAG_SET_RX_CHAINS | | |
968 | SCAN_CONFIG_FLAG_SET_ALL_TIMES | | |
969 | SCAN_CONFIG_FLAG_SET_LEGACY_RATES | | |
970 | SCAN_CONFIG_FLAG_SET_MAC_ADDR | | |
971 | SCAN_CONFIG_FLAG_SET_CHANNEL_FLAGS| | |
972 | SCAN_CONFIG_N_CHANNELS(num_channels)); | |
a0544272 | 973 | scan_config->tx_chains = cpu_to_le32(iwl_mvm_get_valid_tx_ant(mvm)); |
d2496221 DS |
974 | scan_config->rx_chains = cpu_to_le32(iwl_mvm_scan_rx_ant(mvm)); |
975 | scan_config->legacy_rates = iwl_mvm_scan_config_rates(mvm); | |
976 | scan_config->out_of_channel_time = cpu_to_le32(170); | |
977 | scan_config->suspend_time = cpu_to_le32(30); | |
978 | scan_config->dwell_active = 20; | |
979 | scan_config->dwell_passive = 110; | |
980 | scan_config->dwell_fragmented = 20; | |
981 | ||
982 | memcpy(&scan_config->mac_addr, &mvm->addresses[0].addr, ETH_ALEN); | |
983 | ||
984 | scan_config->bcast_sta_id = mvm->aux_sta.sta_id; | |
985 | scan_config->channel_flags = IWL_CHANNEL_FLAG_EBS | | |
986 | IWL_CHANNEL_FLAG_ACCURATE_EBS | | |
987 | IWL_CHANNEL_FLAG_EBS_ADD | | |
988 | IWL_CHANNEL_FLAG_PRE_SCAN_PASSIVE2ACTIVE; | |
989 | ||
990 | band = &mvm->nvm_data->bands[IEEE80211_BAND_2GHZ]; | |
991 | for (i = 0; i < band->n_channels; i++, j++) | |
a25d40e2 | 992 | scan_config->channel_array[j] = band->channels[i].hw_value; |
d2496221 DS |
993 | band = &mvm->nvm_data->bands[IEEE80211_BAND_5GHZ]; |
994 | for (i = 0; i < band->n_channels; i++, j++) | |
a25d40e2 | 995 | scan_config->channel_array[j] = band->channels[i].hw_value; |
d2496221 DS |
996 | |
997 | cmd.data[0] = scan_config; | |
998 | cmd.len[0] = cmd_size; | |
999 | cmd.dataflags[0] = IWL_HCMD_DFL_NOCOPY; | |
1000 | ||
1001 | IWL_DEBUG_SCAN(mvm, "Sending UMAC scan config\n"); | |
1002 | ||
1003 | ret = iwl_mvm_send_cmd(mvm, &cmd); | |
1004 | ||
1005 | kfree(scan_config); | |
1006 | return ret; | |
1007 | } | |
1008 | ||
6185af2a | 1009 | static int iwl_mvm_scan_uid_by_status(struct iwl_mvm *mvm, int status) |
d2496221 DS |
1010 | { |
1011 | int i; | |
1012 | ||
507e4cda | 1013 | for (i = 0; i < mvm->max_scans; i++) |
6185af2a | 1014 | if (mvm->scan_uid_status[i] == status) |
d2496221 DS |
1015 | return i; |
1016 | ||
6185af2a | 1017 | return -ENOENT; |
d2496221 DS |
1018 | } |
1019 | ||
133c8259 | 1020 | static void iwl_mvm_scan_umac_dwell(struct iwl_mvm *mvm, |
d2496221 DS |
1021 | struct iwl_scan_req_umac *cmd, |
1022 | struct iwl_mvm_scan_params *params) | |
1023 | { | |
d2496221 DS |
1024 | cmd->active_dwell = params->dwell[IEEE80211_BAND_2GHZ].active; |
1025 | cmd->passive_dwell = params->dwell[IEEE80211_BAND_2GHZ].passive; | |
1026 | if (params->passive_fragmented) | |
1027 | cmd->fragmented_dwell = | |
190f1029 | 1028 | params->dwell[IEEE80211_BAND_2GHZ].fragmented; |
d2496221 DS |
1029 | cmd->max_out_time = cpu_to_le32(params->max_out_time); |
1030 | cmd->suspend_time = cpu_to_le32(params->suspend_time); | |
d7afbfc4 AS |
1031 | cmd->scan_priority = |
1032 | iwl_mvm_scan_priority(mvm, IWL_SCAN_PRIORITY_EXT_6); | |
133c8259 LC |
1033 | |
1034 | if (iwl_mvm_scan_total_iterations(params) == 0) | |
d7afbfc4 AS |
1035 | cmd->ooc_priority = |
1036 | iwl_mvm_scan_priority(mvm, IWL_SCAN_PRIORITY_EXT_6); | |
133c8259 | 1037 | else |
d7afbfc4 AS |
1038 | cmd->ooc_priority = |
1039 | iwl_mvm_scan_priority(mvm, IWL_SCAN_PRIORITY_EXT_2); | |
d2496221 DS |
1040 | } |
1041 | ||
1042 | static void | |
1043 | iwl_mvm_umac_scan_cfg_channels(struct iwl_mvm *mvm, | |
1044 | struct ieee80211_channel **channels, | |
1045 | int n_channels, u32 ssid_bitmap, | |
1046 | struct iwl_scan_req_umac *cmd) | |
1047 | { | |
1048 | struct iwl_scan_channel_cfg_umac *channel_cfg = (void *)&cmd->data; | |
1049 | int i; | |
1050 | ||
1051 | for (i = 0; i < n_channels; i++) { | |
1052 | channel_cfg[i].flags = cpu_to_le32(ssid_bitmap); | |
1053 | channel_cfg[i].channel_num = channels[i]->hw_value; | |
1054 | channel_cfg[i].iter_count = 1; | |
1055 | channel_cfg[i].iter_interval = 0; | |
1056 | } | |
1057 | } | |
1058 | ||
6f4dcc76 LC |
1059 | static u32 iwl_mvm_scan_umac_flags(struct iwl_mvm *mvm, |
1060 | struct iwl_mvm_scan_params *params) | |
d2496221 DS |
1061 | { |
1062 | int flags = 0; | |
1063 | ||
6f4dcc76 | 1064 | if (params->n_ssids == 0) |
d2496221 DS |
1065 | flags = IWL_UMAC_SCAN_GEN_FLAGS_PASSIVE; |
1066 | ||
6f4dcc76 | 1067 | if (params->n_ssids == 1 && params->ssids[0].ssid_len != 0) |
d2496221 DS |
1068 | flags |= IWL_UMAC_SCAN_GEN_FLAGS_PRE_CONNECT; |
1069 | ||
6f4dcc76 | 1070 | if (params->passive_fragmented) |
d2496221 DS |
1071 | flags |= IWL_UMAC_SCAN_GEN_FLAGS_FRAGMENTED; |
1072 | ||
1073 | if (iwl_mvm_rrm_scan_needed(mvm)) | |
1074 | flags |= IWL_UMAC_SCAN_GEN_FLAGS_RRM_ENABLED; | |
1075 | ||
6f4dcc76 LC |
1076 | if (params->pass_all) |
1077 | flags |= IWL_UMAC_SCAN_GEN_FLAGS_PASS_ALL; | |
1078 | else | |
1079 | flags |= IWL_UMAC_SCAN_GEN_FLAGS_MATCH; | |
1080 | ||
1081 | if (iwl_mvm_scan_total_iterations(params) > 1) | |
1082 | flags |= IWL_UMAC_SCAN_GEN_FLAGS_PERIODIC; | |
1083 | ||
ee9219b2 AS |
1084 | #ifdef CONFIG_IWLWIFI_DEBUGFS |
1085 | if (mvm->scan_iter_notif_enabled) | |
1086 | flags |= IWL_UMAC_SCAN_GEN_FLAGS_ITER_COMPLETE; | |
1087 | #endif | |
d2496221 DS |
1088 | return flags; |
1089 | } | |
1090 | ||
6749dd80 | 1091 | static int iwl_mvm_scan_umac(struct iwl_mvm *mvm, struct ieee80211_vif *vif, |
6185af2a LC |
1092 | struct iwl_mvm_scan_params *params, |
1093 | int type) | |
d2496221 | 1094 | { |
d2496221 DS |
1095 | struct iwl_scan_req_umac *cmd = mvm->scan_cmd; |
1096 | struct iwl_scan_req_umac_tail *sec_part = (void *)&cmd->data + | |
1097 | sizeof(struct iwl_scan_channel_cfg_umac) * | |
1098 | mvm->fw->ucode_capa.n_scan_channels; | |
6185af2a | 1099 | int uid; |
c8660dd5 | 1100 | u32 ssid_bitmap = 0; |
6f4dcc76 | 1101 | int n_iterations = iwl_mvm_scan_total_iterations(params); |
d2496221 DS |
1102 | |
1103 | lockdep_assert_held(&mvm->mutex); | |
1104 | ||
6185af2a LC |
1105 | uid = iwl_mvm_scan_uid_by_status(mvm, 0); |
1106 | if (uid < 0) | |
1107 | return uid; | |
d2496221 | 1108 | |
133c8259 LC |
1109 | memset(cmd, 0, ksize(cmd)); |
1110 | cmd->hdr.size = cpu_to_le16(iwl_mvm_scan_size(mvm) - | |
1111 | sizeof(struct iwl_mvm_umac_cmd_hdr)); | |
d2496221 | 1112 | |
133c8259 LC |
1113 | iwl_mvm_scan_umac_dwell(mvm, cmd, params); |
1114 | ||
6185af2a | 1115 | mvm->scan_uid_status[uid] = type; |
d2496221 | 1116 | |
d2496221 | 1117 | cmd->uid = cpu_to_le32(uid); |
6f4dcc76 | 1118 | cmd->general_flags = cpu_to_le32(iwl_mvm_scan_umac_flags(mvm, params)); |
d2496221 | 1119 | |
8423cdc3 | 1120 | if (iwl_mvm_scan_use_ebs(mvm, n_iterations)) |
d2496221 DS |
1121 | cmd->channel_flags = IWL_SCAN_CHANNEL_FLAG_EBS | |
1122 | IWL_SCAN_CHANNEL_FLAG_EBS_ACCURATE | | |
1123 | IWL_SCAN_CHANNEL_FLAG_CACHE_ADD; | |
1124 | ||
f7b788b4 | 1125 | cmd->n_channels = params->n_channels; |
d2496221 | 1126 | |
e2ec4f6d | 1127 | iwl_scan_build_ssids(params, sec_part->direct_scan, &ssid_bitmap); |
d2496221 | 1128 | |
f7b788b4 LC |
1129 | iwl_mvm_umac_scan_cfg_channels(mvm, params->channels, |
1130 | params->n_channels, ssid_bitmap, cmd); | |
d2496221 | 1131 | |
a54cb641 LC |
1132 | /* With UMAC we use only one schedule for now, so use the sum |
1133 | * of the iterations (with a a maximum of 255). | |
8423cdc3 LC |
1134 | */ |
1135 | sec_part->schedule[0].iter_count = | |
1136 | (n_iterations > 255) ? 255 : n_iterations; | |
cf5d317d LC |
1137 | sec_part->schedule[0].interval = cpu_to_le16(params->interval); |
1138 | ||
283c2491 | 1139 | sec_part->delay = cpu_to_le16(params->delay); |
45d1b12e | 1140 | sec_part->preq = params->preq; |
d2496221 | 1141 | |
8df3e68f | 1142 | return 0; |
d2496221 DS |
1143 | } |
1144 | ||
6749dd80 LC |
1145 | static int iwl_mvm_num_scans(struct iwl_mvm *mvm) |
1146 | { | |
1147 | return hweight32(mvm->scan_status & IWL_MVM_SCAN_MASK); | |
1148 | } | |
1149 | ||
1150 | static int iwl_mvm_check_running_scans(struct iwl_mvm *mvm, int type) | |
1151 | { | |
1152 | /* This looks a bit arbitrary, but the idea is that if we run | |
1153 | * out of possible simultaneous scans and the userspace is | |
1154 | * trying to run a scan type that is already running, we | |
1155 | * return -EBUSY. But if the userspace wants to start a | |
1156 | * different type of scan, we stop the opposite type to make | |
1157 | * space for the new request. The reason is backwards | |
1158 | * compatibility with old wpa_supplicant that wouldn't stop a | |
1159 | * scheduled scan before starting a normal scan. | |
1160 | */ | |
1161 | ||
1162 | if (iwl_mvm_num_scans(mvm) < mvm->max_scans) | |
1163 | return 0; | |
1164 | ||
1165 | /* Use a switch, even though this is a bitmask, so that more | |
1166 | * than one bits set will fall in default and we will warn. | |
1167 | */ | |
1168 | switch (type) { | |
1169 | case IWL_MVM_SCAN_REGULAR: | |
1170 | if (mvm->scan_status & IWL_MVM_SCAN_REGULAR_MASK) | |
1171 | return -EBUSY; | |
62a6b9c8 | 1172 | return iwl_mvm_sched_scan_stop(mvm, true); |
6749dd80 LC |
1173 | case IWL_MVM_SCAN_SCHED: |
1174 | if (mvm->scan_status & IWL_MVM_SCAN_SCHED_MASK) | |
1175 | return -EBUSY; | |
62a6b9c8 | 1176 | return iwl_mvm_reg_scan_stop(mvm); |
19945dfb LC |
1177 | case IWL_MVM_SCAN_NETDETECT: |
1178 | /* No need to stop anything for net-detect since the | |
1179 | * firmware is restarted anyway. This way, any sched | |
1180 | * scans that were running will be restarted when we | |
1181 | * resume. | |
1182 | */ | |
1183 | return 0; | |
6749dd80 LC |
1184 | default: |
1185 | WARN_ON(1); | |
1186 | break; | |
1187 | } | |
1188 | ||
1189 | return -EIO; | |
1190 | } | |
1191 | ||
1192 | int iwl_mvm_reg_scan_start(struct iwl_mvm *mvm, struct ieee80211_vif *vif, | |
1193 | struct cfg80211_scan_request *req, | |
1194 | struct ieee80211_scan_ies *ies) | |
1195 | { | |
3db7c6e7 LC |
1196 | struct iwl_host_cmd hcmd = { |
1197 | .len = { iwl_mvm_scan_size(mvm), }, | |
1198 | .data = { mvm->scan_cmd, }, | |
1199 | .dataflags = { IWL_HCMD_DFL_NOCOPY, }, | |
1200 | }; | |
1201 | struct iwl_mvm_scan_params params = {}; | |
6749dd80 LC |
1202 | int ret; |
1203 | ||
1204 | lockdep_assert_held(&mvm->mutex); | |
1205 | ||
1206 | if (iwl_mvm_is_lar_supported(mvm) && !mvm->lar_regdom_set) { | |
1207 | IWL_ERR(mvm, "scan while LAR regdomain is not set\n"); | |
1208 | return -EBUSY; | |
1209 | } | |
1210 | ||
1211 | ret = iwl_mvm_check_running_scans(mvm, IWL_MVM_SCAN_REGULAR); | |
1212 | if (ret) | |
1213 | return ret; | |
1214 | ||
1215 | iwl_mvm_ref(mvm, IWL_MVM_REF_SCAN); | |
1216 | ||
3db7c6e7 LC |
1217 | /* we should have failed registration if scan_cmd was NULL */ |
1218 | if (WARN_ON(!mvm->scan_cmd)) | |
1219 | return -ENOMEM; | |
1220 | ||
1221 | if (!iwl_mvm_scan_fits(mvm, req->n_ssids, ies, req->n_channels)) | |
1222 | return -ENOBUFS; | |
1223 | ||
4b817051 LC |
1224 | params.n_ssids = req->n_ssids; |
1225 | params.flags = req->flags; | |
f7b788b4 LC |
1226 | params.n_channels = req->n_channels; |
1227 | params.delay = 0; | |
1228 | params.interval = 0; | |
1229 | params.ssids = req->ssids; | |
1230 | params.channels = req->channels; | |
1231 | params.mac_addr = req->mac_addr; | |
1232 | params.mac_addr_mask = req->mac_addr_mask; | |
1233 | params.no_cck = req->no_cck; | |
1234 | params.pass_all = true; | |
1235 | params.n_match_sets = 0; | |
1236 | params.match_sets = NULL; | |
3db7c6e7 | 1237 | |
cf5d317d LC |
1238 | params.schedule[0].iterations = 1; |
1239 | params.schedule[0].full_scan_mul = 0; | |
1240 | params.schedule[1].iterations = 0; | |
1241 | params.schedule[1].full_scan_mul = 0; | |
1242 | ||
4b817051 LC |
1243 | iwl_mvm_scan_calc_dwell(mvm, vif, ¶ms); |
1244 | ||
45d1b12e LC |
1245 | iwl_mvm_build_scan_probe(mvm, vif, ies, ¶ms); |
1246 | ||
3db7c6e7 LC |
1247 | if (mvm->fw->ucode_capa.capa[0] & IWL_UCODE_TLV_CAPA_UMAC_SCAN) { |
1248 | hcmd.id = SCAN_REQ_UMAC; | |
6185af2a LC |
1249 | ret = iwl_mvm_scan_umac(mvm, vif, ¶ms, |
1250 | IWL_MVM_SCAN_REGULAR); | |
3db7c6e7 LC |
1251 | } else { |
1252 | hcmd.id = SCAN_OFFLOAD_REQUEST_CMD; | |
45d1b12e | 1253 | ret = iwl_mvm_scan_lmac(mvm, vif, ¶ms); |
3db7c6e7 LC |
1254 | } |
1255 | ||
1256 | if (ret) | |
1257 | return ret; | |
1258 | ||
1259 | ret = iwl_mvm_send_cmd(mvm, &hcmd); | |
1260 | if (!ret) { | |
1261 | IWL_DEBUG_SCAN(mvm, "Scan request was sent successfully\n"); | |
1262 | mvm->scan_status |= IWL_MVM_SCAN_REGULAR; | |
1263 | } else { | |
1264 | /* If the scan failed, it usually means that the FW was unable | |
1265 | * to allocate the time events. Warn on it, but maybe we | |
1266 | * should try to send the command again with different params. | |
1267 | */ | |
1268 | IWL_ERR(mvm, "Scan failed! ret %d\n", ret); | |
1269 | } | |
6749dd80 LC |
1270 | |
1271 | if (ret) | |
1272 | iwl_mvm_unref(mvm, IWL_MVM_REF_SCAN); | |
1273 | ||
1274 | return ret; | |
1275 | } | |
1276 | ||
65ff556b LC |
1277 | int iwl_mvm_sched_scan_start(struct iwl_mvm *mvm, |
1278 | struct ieee80211_vif *vif, | |
1279 | struct cfg80211_sched_scan_request *req, | |
19945dfb LC |
1280 | struct ieee80211_scan_ies *ies, |
1281 | int type) | |
65ff556b | 1282 | { |
8df3e68f LC |
1283 | struct iwl_host_cmd hcmd = { |
1284 | .len = { iwl_mvm_scan_size(mvm), }, | |
1285 | .data = { mvm->scan_cmd, }, | |
1286 | .dataflags = { IWL_HCMD_DFL_NOCOPY, }, | |
1287 | }; | |
1288 | struct iwl_mvm_scan_params params = {}; | |
65ff556b LC |
1289 | int ret; |
1290 | ||
6749dd80 LC |
1291 | lockdep_assert_held(&mvm->mutex); |
1292 | ||
1293 | if (iwl_mvm_is_lar_supported(mvm) && !mvm->lar_regdom_set) { | |
1294 | IWL_ERR(mvm, "sched-scan while LAR regdomain is not set\n"); | |
1295 | return -EBUSY; | |
1296 | } | |
1297 | ||
19945dfb | 1298 | ret = iwl_mvm_check_running_scans(mvm, type); |
6749dd80 LC |
1299 | if (ret) |
1300 | return ret; | |
1301 | ||
8df3e68f LC |
1302 | /* we should have failed registration if scan_cmd was NULL */ |
1303 | if (WARN_ON(!mvm->scan_cmd)) | |
1304 | return -ENOMEM; | |
1305 | ||
1306 | if (!iwl_mvm_scan_fits(mvm, req->n_ssids, ies, req->n_channels)) | |
1307 | return -ENOBUFS; | |
1308 | ||
4b817051 LC |
1309 | params.n_ssids = req->n_ssids; |
1310 | params.flags = req->flags; | |
f7b788b4 | 1311 | params.n_channels = req->n_channels; |
f7b788b4 LC |
1312 | params.ssids = req->ssids; |
1313 | params.channels = req->channels; | |
1314 | params.mac_addr = req->mac_addr; | |
1315 | params.mac_addr_mask = req->mac_addr_mask; | |
1316 | params.no_cck = false; | |
1317 | params.pass_all = iwl_mvm_scan_pass_all(mvm, req); | |
1318 | params.n_match_sets = req->n_match_sets; | |
1319 | params.match_sets = req->match_sets; | |
1320 | ||
cf5d317d LC |
1321 | params.schedule[0].iterations = IWL_FAST_SCHED_SCAN_ITERATIONS; |
1322 | params.schedule[0].full_scan_mul = 1; | |
1323 | params.schedule[1].iterations = 0xff; | |
1324 | params.schedule[1].full_scan_mul = IWL_FULL_SCAN_MULTIPLIER; | |
1325 | ||
f7b788b4 LC |
1326 | if (req->interval > U16_MAX) { |
1327 | IWL_DEBUG_SCAN(mvm, | |
1328 | "interval value is > 16-bits, set to max possible\n"); | |
1329 | params.interval = U16_MAX; | |
1330 | } else { | |
1331 | params.interval = req->interval / MSEC_PER_SEC; | |
1332 | } | |
8df3e68f | 1333 | |
283c2491 LC |
1334 | /* In theory, LMAC scans can handle a 32-bit delay, but since |
1335 | * waiting for over 18 hours to start the scan is a bit silly | |
1336 | * and to keep it aligned with UMAC scans (which only support | |
1337 | * 16-bit delays), trim it down to 16-bits. | |
1338 | */ | |
1339 | if (req->delay > U16_MAX) { | |
1340 | IWL_DEBUG_SCAN(mvm, | |
1341 | "delay value is > 16-bits, set to max possible\n"); | |
1342 | params.delay = U16_MAX; | |
1343 | } else { | |
1344 | params.delay = req->delay; | |
1345 | } | |
1346 | ||
4b817051 LC |
1347 | iwl_mvm_scan_calc_dwell(mvm, vif, ¶ms); |
1348 | ||
65ff556b LC |
1349 | ret = iwl_mvm_config_sched_scan_profiles(mvm, req); |
1350 | if (ret) | |
1351 | return ret; | |
1352 | ||
45d1b12e LC |
1353 | iwl_mvm_build_scan_probe(mvm, vif, ies, ¶ms); |
1354 | ||
65ff556b | 1355 | if (mvm->fw->ucode_capa.capa[0] & IWL_UCODE_TLV_CAPA_UMAC_SCAN) { |
8df3e68f | 1356 | hcmd.id = SCAN_REQ_UMAC; |
6185af2a | 1357 | ret = iwl_mvm_scan_umac(mvm, vif, ¶ms, IWL_MVM_SCAN_SCHED); |
65ff556b | 1358 | } else { |
8df3e68f | 1359 | hcmd.id = SCAN_OFFLOAD_REQUEST_CMD; |
7d7de1e9 | 1360 | ret = iwl_mvm_scan_lmac(mvm, vif, ¶ms); |
8df3e68f LC |
1361 | } |
1362 | ||
1363 | if (ret) | |
1364 | return ret; | |
1365 | ||
1366 | ret = iwl_mvm_send_cmd(mvm, &hcmd); | |
1367 | if (!ret) { | |
1368 | IWL_DEBUG_SCAN(mvm, | |
1369 | "Sched scan request was sent successfully\n"); | |
1370 | mvm->scan_status |= type; | |
1371 | } else { | |
1372 | /* If the scan failed, it usually means that the FW was unable | |
1373 | * to allocate the time events. Warn on it, but maybe we | |
1374 | * should try to send the command again with different params. | |
1375 | */ | |
1376 | IWL_ERR(mvm, "Sched scan failed! ret %d\n", ret); | |
65ff556b LC |
1377 | } |
1378 | ||
1379 | return ret; | |
1380 | } | |
1381 | ||
d2496221 DS |
1382 | int iwl_mvm_rx_umac_scan_complete_notif(struct iwl_mvm *mvm, |
1383 | struct iwl_rx_cmd_buffer *rxb, | |
1384 | struct iwl_device_cmd *cmd) | |
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); | |
6185af2a | 1389 | bool sched = (mvm->scan_uid_status[uid] == IWL_MVM_SCAN_SCHED); |
d2496221 | 1390 | |
6185af2a LC |
1391 | /* the status may be already zero in case of scan abort from above */ |
1392 | if (mvm->scan_uid_status[uid] == 0) | |
d2496221 DS |
1393 | return 0; |
1394 | ||
1395 | IWL_DEBUG_SCAN(mvm, | |
1396 | "Scan completed, uid %u type %s, status %s, EBS status %s\n", | |
1397 | uid, sched ? "sched" : "regular", | |
1398 | notif->status == IWL_SCAN_OFFLOAD_COMPLETED ? | |
1399 | "completed" : "aborted", | |
1400 | notif->ebs_status == IWL_SCAN_EBS_SUCCESS ? | |
1401 | "success" : "failed"); | |
1402 | ||
5a4b2afa HD |
1403 | if (notif->ebs_status) |
1404 | mvm->last_ebs_successful = false; | |
1405 | ||
6185af2a | 1406 | mvm->scan_uid_status[uid] = 0; |
d2496221 DS |
1407 | |
1408 | if (!sched) { | |
1409 | ieee80211_scan_completed(mvm->hw, | |
1410 | notif->status == | |
1411 | IWL_SCAN_OFFLOAD_ABORTED); | |
1412 | iwl_mvm_unref(mvm, IWL_MVM_REF_SCAN); | |
6185af2a | 1413 | } else if (iwl_mvm_scan_uid_by_status(mvm, IWL_MVM_SCAN_SCHED) < 0) { |
d2496221 DS |
1414 | ieee80211_sched_scan_stopped(mvm->hw); |
1415 | } else { | |
1416 | IWL_DEBUG_SCAN(mvm, "Another sched scan is running\n"); | |
1417 | } | |
1418 | ||
1419 | return 0; | |
1420 | } | |
1421 | ||
ee9219b2 AS |
1422 | int iwl_mvm_rx_umac_scan_iter_complete_notif(struct iwl_mvm *mvm, |
1423 | struct iwl_rx_cmd_buffer *rxb, | |
1424 | struct iwl_device_cmd *cmd) | |
1425 | { | |
1426 | struct iwl_rx_packet *pkt = rxb_addr(rxb); | |
1427 | struct iwl_umac_scan_iter_complete_notif *notif = (void *)pkt->data; | |
1428 | u8 buf[256]; | |
1429 | ||
1430 | IWL_DEBUG_SCAN(mvm, | |
1431 | "UMAC Scan iteration complete: status=0x%x scanned_channels=%d channels list: %s\n", | |
1432 | notif->status, notif->scanned_channels, | |
1433 | iwl_mvm_dump_channel_list(notif->results, | |
1434 | notif->scanned_channels, buf, | |
1435 | sizeof(buf))); | |
1436 | return 0; | |
1437 | } | |
1438 | ||
434f3c1b | 1439 | static int iwl_mvm_umac_scan_abort(struct iwl_mvm *mvm, int type) |
d2496221 DS |
1440 | { |
1441 | struct iwl_umac_scan_abort cmd = { | |
1442 | .hdr.size = cpu_to_le16(sizeof(struct iwl_umac_scan_abort) - | |
1443 | sizeof(struct iwl_mvm_umac_cmd_hdr)), | |
d2496221 | 1444 | }; |
434f3c1b | 1445 | int uid, ret; |
d2496221 DS |
1446 | |
1447 | lockdep_assert_held(&mvm->mutex); | |
1448 | ||
434f3c1b LC |
1449 | /* We should always get a valid index here, because we already |
1450 | * checked that this type of scan was running in the generic | |
1451 | * code. | |
1452 | */ | |
1453 | uid = iwl_mvm_scan_uid_by_status(mvm, type); | |
1454 | if (WARN_ON_ONCE(uid < 0)) | |
1455 | return uid; | |
1456 | ||
1457 | cmd.uid = cpu_to_le32(uid); | |
1458 | ||
d2496221 DS |
1459 | IWL_DEBUG_SCAN(mvm, "Sending scan abort, uid %u\n", uid); |
1460 | ||
434f3c1b LC |
1461 | ret = iwl_mvm_send_cmd_pdu(mvm, SCAN_ABORT_UMAC, 0, sizeof(cmd), &cmd); |
1462 | if (!ret) | |
1463 | mvm->scan_uid_status[uid] = 0; | |
1464 | ||
1465 | return ret; | |
d2496221 DS |
1466 | } |
1467 | ||
dfbf156d | 1468 | static int iwl_mvm_umac_scan_stop(struct iwl_mvm *mvm, int type) |
d2496221 DS |
1469 | { |
1470 | struct iwl_notification_wait wait_scan_done; | |
1471 | static const u8 scan_done_notif[] = { SCAN_COMPLETE_UMAC, }; | |
434f3c1b | 1472 | int ret; |
d2496221 DS |
1473 | |
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 | ||
434f3c1b | 1481 | ret = iwl_mvm_umac_scan_abort(mvm, type); |
d2496221 | 1482 | if (ret) { |
434f3c1b | 1483 | IWL_DEBUG_SCAN(mvm, "couldn't stop scan type %d\n", type); |
d2496221 DS |
1484 | iwl_remove_notification(&mvm->notif_wait, &wait_scan_done); |
1485 | return ret; | |
1486 | } | |
1487 | ||
1488 | ret = iwl_wait_notification(&mvm->notif_wait, &wait_scan_done, 1 * HZ); | |
d2496221 DS |
1489 | |
1490 | return ret; | |
1491 | } | |
1492 | ||
1493 | int iwl_mvm_scan_size(struct iwl_mvm *mvm) | |
1494 | { | |
1495 | if (mvm->fw->ucode_capa.capa[0] & IWL_UCODE_TLV_CAPA_UMAC_SCAN) | |
1496 | return sizeof(struct iwl_scan_req_umac) + | |
1497 | sizeof(struct iwl_scan_channel_cfg_umac) * | |
1498 | mvm->fw->ucode_capa.n_scan_channels + | |
1499 | sizeof(struct iwl_scan_req_umac_tail); | |
1500 | ||
65ff556b | 1501 | return sizeof(struct iwl_scan_req_lmac) + |
1f940386 LC |
1502 | sizeof(struct iwl_scan_channel_cfg_lmac) * |
1503 | mvm->fw->ucode_capa.n_scan_channels + | |
1504 | sizeof(struct iwl_scan_probe_req); | |
d2496221 | 1505 | } |
4ffb3650 DS |
1506 | |
1507 | /* | |
1508 | * This function is used in nic restart flow, to inform mac80211 about scans | |
1509 | * that was aborted by restart flow or by an assert. | |
1510 | */ | |
1511 | void iwl_mvm_report_scan_aborted(struct iwl_mvm *mvm) | |
1512 | { | |
1513 | if (mvm->fw->ucode_capa.capa[0] & IWL_UCODE_TLV_CAPA_UMAC_SCAN) { | |
6185af2a | 1514 | int uid, i; |
963221be | 1515 | |
6185af2a LC |
1516 | uid = iwl_mvm_scan_uid_by_status(mvm, IWL_MVM_SCAN_REGULAR); |
1517 | if (uid >= 0) { | |
4ffb3650 | 1518 | ieee80211_scan_completed(mvm->hw, true); |
6185af2a | 1519 | mvm->scan_uid_status[uid] = 0; |
963221be | 1520 | } |
6185af2a LC |
1521 | uid = iwl_mvm_scan_uid_by_status(mvm, IWL_MVM_SCAN_SCHED); |
1522 | if (uid >= 0 && !mvm->restart_fw) { | |
4ffb3650 | 1523 | ieee80211_sched_scan_stopped(mvm->hw); |
6185af2a | 1524 | mvm->scan_uid_status[uid] = 0; |
963221be AB |
1525 | } |
1526 | ||
1527 | /* We shouldn't have any UIDs still set. Loop over all the | |
1528 | * UIDs to make sure there's nothing left there and warn if | |
1529 | * any is found. | |
1530 | */ | |
507e4cda | 1531 | for (i = 0; i < mvm->max_scans; i++) { |
6185af2a LC |
1532 | if (WARN_ONCE(mvm->scan_uid_status[i], |
1533 | "UMAC scan UID %d status was not cleaned\n", | |
1534 | i)) | |
1535 | mvm->scan_uid_status[i] = 0; | |
963221be | 1536 | } |
4ffb3650 | 1537 | } else { |
9af91f46 | 1538 | if (mvm->scan_status & IWL_MVM_SCAN_REGULAR) |
4ffb3650 | 1539 | ieee80211_scan_completed(mvm->hw, true); |
9af91f46 LC |
1540 | |
1541 | /* Sched scan will be restarted by mac80211 in | |
1542 | * restart_hw, so do not report if FW is about to be | |
1543 | * restarted. | |
1544 | */ | |
1545 | if ((mvm->scan_status & IWL_MVM_SCAN_SCHED) && !mvm->restart_fw) | |
1546 | ieee80211_sched_scan_stopped(mvm->hw); | |
4ffb3650 DS |
1547 | } |
1548 | } | |
dfbf156d LC |
1549 | |
1550 | int iwl_mvm_reg_scan_stop(struct iwl_mvm *mvm) | |
1551 | { | |
1552 | int ret; | |
1553 | ||
1554 | if (!(mvm->scan_status & IWL_MVM_SCAN_REGULAR)) | |
1555 | return 0; | |
1556 | ||
1557 | if (iwl_mvm_is_radio_killed(mvm)) { | |
1558 | ret = 0; | |
1559 | goto out; | |
1560 | } | |
1561 | ||
1562 | if (mvm->fw->ucode_capa.capa[0] & IWL_UCODE_TLV_CAPA_UMAC_SCAN) | |
1563 | ret = iwl_mvm_umac_scan_stop(mvm, IWL_MVM_SCAN_REGULAR); | |
1564 | else | |
1565 | ret = iwl_mvm_lmac_scan_stop(mvm, IWL_MVM_SCAN_REGULAR); | |
1566 | ||
1567 | if (!ret) | |
1568 | mvm->scan_status |= IWL_MVM_SCAN_STOPPING_REGULAR; | |
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 | |
1573 | * above. Since the rx handler won't do anything now, we have | |
1574 | * to release the scan reference here. | |
1575 | */ | |
1576 | iwl_mvm_unref(mvm, IWL_MVM_REF_SCAN); | |
1577 | ||
1578 | mvm->scan_status &= ~IWL_MVM_SCAN_REGULAR; | |
1579 | ieee80211_scan_completed(mvm->hw, true); | |
1580 | ||
1581 | return ret; | |
1582 | } | |
1583 | ||
1584 | int iwl_mvm_sched_scan_stop(struct iwl_mvm *mvm, bool notify) | |
1585 | { | |
1586 | int ret; | |
1587 | ||
1588 | if (!(mvm->scan_status & IWL_MVM_SCAN_SCHED)) | |
1589 | return 0; | |
1590 | ||
1591 | if (iwl_mvm_is_radio_killed(mvm)) { | |
1592 | ret = 0; | |
1593 | goto out; | |
1594 | } | |
1595 | ||
1596 | if (mvm->fw->ucode_capa.capa[0] & IWL_UCODE_TLV_CAPA_UMAC_SCAN) | |
1597 | ret = iwl_mvm_umac_scan_stop(mvm, IWL_MVM_SCAN_SCHED); | |
1598 | else | |
1599 | ret = iwl_mvm_lmac_scan_stop(mvm, IWL_MVM_SCAN_SCHED); | |
1600 | ||
1601 | if (!ret) | |
1602 | mvm->scan_status |= IWL_MVM_SCAN_STOPPING_SCHED; | |
1603 | out: | |
1604 | mvm->scan_status &= ~IWL_MVM_SCAN_SCHED; | |
1605 | if (notify) | |
1606 | ieee80211_sched_scan_stopped(mvm->hw); | |
1607 | ||
1608 | return ret; | |
1609 | } |