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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. |
8b4139dc | 9 | * Copyright(c) 2013 - 2014 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. |
8b4139dc | 35 | * Copyright(c) 2013 - 2014 Intel Mobile Communications GmbH |
8ca151b5 JB |
36 | * All rights reserved. |
37 | * | |
38 | * Redistribution and use in source and binary forms, with or without | |
39 | * modification, are permitted provided that the following conditions | |
40 | * are met: | |
41 | * | |
42 | * * Redistributions of source code must retain the above copyright | |
43 | * notice, this list of conditions and the following disclaimer. | |
44 | * * Redistributions in binary form must reproduce the above copyright | |
45 | * notice, this list of conditions and the following disclaimer in | |
46 | * the documentation and/or other materials provided with the | |
47 | * distribution. | |
48 | * * Neither the name Intel Corporation nor the names of its | |
49 | * contributors may be used to endorse or promote products derived | |
50 | * from this software without specific prior written permission. | |
51 | * | |
52 | * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS | |
53 | * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT | |
54 | * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR | |
55 | * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT | |
56 | * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, | |
57 | * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT | |
58 | * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, | |
59 | * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY | |
60 | * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT | |
61 | * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE | |
62 | * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. | |
63 | * | |
64 | *****************************************************************************/ | |
65 | ||
66 | #include <linux/etherdevice.h> | |
67 | #include <net/mac80211.h> | |
68 | ||
69 | #include "mvm.h" | |
70 | #include "iwl-eeprom-parse.h" | |
71 | #include "fw-api-scan.h" | |
72 | ||
73 | #define IWL_PLCP_QUIET_THRESH 1 | |
74 | #define IWL_ACTIVE_QUIET_TIME 10 | |
a1ed4025 HD |
75 | #define IWL_DENSE_EBS_SCAN_RATIO 5 |
76 | #define IWL_SPARSE_EBS_SCAN_RATIO 1 | |
8a110d9b AB |
77 | |
78 | struct iwl_mvm_scan_params { | |
79 | u32 max_out_time; | |
80 | u32 suspend_time; | |
50df8a30 AB |
81 | bool passive_fragmented; |
82 | struct _dwell { | |
83 | u16 passive; | |
84 | u16 active; | |
190f1029 | 85 | u16 fragmented; |
50df8a30 | 86 | } dwell[IEEE80211_NUM_BANDS]; |
8a110d9b | 87 | }; |
8ca151b5 | 88 | |
d2496221 DS |
89 | enum iwl_umac_scan_uid_type { |
90 | IWL_UMAC_SCAN_UID_REG_SCAN = BIT(0), | |
91 | IWL_UMAC_SCAN_UID_SCHED_SCAN = BIT(1), | |
92 | IWL_UMAC_SCAN_UID_ALL = IWL_UMAC_SCAN_UID_REG_SCAN | | |
93 | IWL_UMAC_SCAN_UID_SCHED_SCAN, | |
94 | }; | |
95 | ||
96 | static int iwl_umac_scan_stop(struct iwl_mvm *mvm, | |
97 | enum iwl_umac_scan_uid_type type, bool notify); | |
98 | ||
99 | static u8 iwl_mvm_scan_rx_ant(struct iwl_mvm *mvm) | |
100 | { | |
101 | if (mvm->scan_rx_ant != ANT_NONE) | |
102 | return mvm->scan_rx_ant; | |
a0544272 | 103 | return iwl_mvm_get_valid_rx_ant(mvm); |
d2496221 DS |
104 | } |
105 | ||
8ca151b5 JB |
106 | static inline __le16 iwl_mvm_scan_rx_chain(struct iwl_mvm *mvm) |
107 | { | |
108 | u16 rx_chain; | |
91b05d10 | 109 | u8 rx_ant; |
8ca151b5 | 110 | |
d2496221 | 111 | rx_ant = iwl_mvm_scan_rx_ant(mvm); |
8ca151b5 JB |
112 | rx_chain = rx_ant << PHY_RX_CHAIN_VALID_POS; |
113 | rx_chain |= rx_ant << PHY_RX_CHAIN_FORCE_MIMO_SEL_POS; | |
114 | rx_chain |= rx_ant << PHY_RX_CHAIN_FORCE_SEL_POS; | |
115 | rx_chain |= 0x1 << PHY_RX_CHAIN_DRIVER_FORCE_POS; | |
116 | return cpu_to_le16(rx_chain); | |
117 | } | |
118 | ||
fb98be5e | 119 | static __le32 iwl_mvm_scan_rxon_flags(enum ieee80211_band band) |
8ca151b5 | 120 | { |
fb98be5e | 121 | if (band == IEEE80211_BAND_2GHZ) |
8ca151b5 JB |
122 | return cpu_to_le32(PHY_BAND_24); |
123 | else | |
124 | return cpu_to_le32(PHY_BAND_5); | |
125 | } | |
126 | ||
127 | static inline __le32 | |
128 | iwl_mvm_scan_rate_n_flags(struct iwl_mvm *mvm, enum ieee80211_band band, | |
129 | bool no_cck) | |
130 | { | |
131 | u32 tx_ant; | |
132 | ||
133 | mvm->scan_last_antenna_idx = | |
a0544272 | 134 | iwl_mvm_next_antenna(mvm, iwl_mvm_get_valid_tx_ant(mvm), |
8ca151b5 JB |
135 | mvm->scan_last_antenna_idx); |
136 | tx_ant = BIT(mvm->scan_last_antenna_idx) << RATE_MCS_ANT_POS; | |
137 | ||
138 | if (band == IEEE80211_BAND_2GHZ && !no_cck) | |
139 | return cpu_to_le32(IWL_RATE_1M_PLCP | RATE_MCS_CCK_MSK | | |
140 | tx_ant); | |
141 | else | |
142 | return cpu_to_le32(IWL_RATE_6M_PLCP | tx_ant); | |
143 | } | |
144 | ||
145 | /* | |
146 | * We insert the SSIDs in an inverted order, because the FW will | |
147 | * invert it back. The most prioritized SSID, which is first in the | |
148 | * request list, is not copied here, but inserted directly to the probe | |
149 | * request. | |
150 | */ | |
fb98be5e DS |
151 | static void iwl_mvm_scan_fill_ssids(struct iwl_ssid_ie *cmd_ssid, |
152 | struct cfg80211_ssid *ssids, | |
153 | int n_ssids, int first) | |
8ca151b5 JB |
154 | { |
155 | int fw_idx, req_idx; | |
156 | ||
fb98be5e | 157 | for (req_idx = n_ssids - 1, fw_idx = 0; req_idx >= first; |
fe04e837 | 158 | req_idx--, fw_idx++) { |
fb98be5e DS |
159 | cmd_ssid[fw_idx].id = WLAN_EID_SSID; |
160 | cmd_ssid[fw_idx].len = ssids[req_idx].ssid_len; | |
161 | memcpy(cmd_ssid[fw_idx].ssid, | |
162 | ssids[req_idx].ssid, | |
163 | ssids[req_idx].ssid_len); | |
8ca151b5 JB |
164 | } |
165 | } | |
166 | ||
167 | /* | |
168 | * If req->n_ssids > 0, it means we should do an active scan. | |
169 | * In case of active scan w/o directed scan, we receive a zero-length SSID | |
170 | * just to notify that this scan is active and not passive. | |
171 | * In order to notify the FW of the number of SSIDs we wish to scan (including | |
172 | * the zero-length one), we need to set the corresponding bits in chan->type, | |
20f1a5de DS |
173 | * one for each SSID, and set the active bit (first). If the first SSID is |
174 | * already included in the probe template, so we need to set only | |
175 | * req->n_ssids - 1 bits in addition to the first bit. | |
8ca151b5 | 176 | */ |
3cae0734 DS |
177 | static u16 iwl_mvm_get_active_dwell(struct iwl_mvm *mvm, |
178 | enum ieee80211_band band, int n_ssids) | |
8ca151b5 | 179 | { |
3cae0734 DS |
180 | if (mvm->fw->ucode_capa.api[0] & IWL_UCODE_TLV_API_BASIC_DWELL) |
181 | return 10; | |
8ca151b5 | 182 | if (band == IEEE80211_BAND_2GHZ) |
39745337 DS |
183 | return 20 + 3 * (n_ssids + 1); |
184 | return 10 + 2 * (n_ssids + 1); | |
8ca151b5 JB |
185 | } |
186 | ||
3cae0734 DS |
187 | static u16 iwl_mvm_get_passive_dwell(struct iwl_mvm *mvm, |
188 | enum ieee80211_band band) | |
8ca151b5 | 189 | { |
3cae0734 DS |
190 | if (mvm->fw->ucode_capa.api[0] & IWL_UCODE_TLV_API_BASIC_DWELL) |
191 | return 110; | |
8ca151b5 JB |
192 | return band == IEEE80211_BAND_2GHZ ? 100 + 20 : 100 + 10; |
193 | } | |
194 | ||
8a110d9b AB |
195 | static void iwl_mvm_scan_condition_iterator(void *data, u8 *mac, |
196 | struct ieee80211_vif *vif) | |
61f6325d | 197 | { |
8a110d9b | 198 | struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif); |
c3f8d0a3 | 199 | int *global_cnt = data; |
61f6325d | 200 | |
1e2ebe0e DS |
201 | if (vif->type != NL80211_IFTYPE_P2P_DEVICE && mvmvif->phy_ctxt && |
202 | mvmvif->phy_ctxt->id < MAX_PHYS) | |
c3f8d0a3 | 203 | *global_cnt += 1; |
8a110d9b AB |
204 | } |
205 | ||
206 | static void iwl_mvm_scan_calc_params(struct iwl_mvm *mvm, | |
50df8a30 | 207 | struct ieee80211_vif *vif, |
ab480030 | 208 | int n_ssids, u32 flags, |
8a110d9b AB |
209 | struct iwl_mvm_scan_params *params) |
210 | { | |
c3f8d0a3 | 211 | int global_cnt = 0; |
50df8a30 | 212 | enum ieee80211_band band; |
2ce89cd6 | 213 | u8 frag_passive_dwell = 0; |
8a110d9b AB |
214 | |
215 | ieee80211_iterate_active_interfaces_atomic(mvm->hw, | |
216 | IEEE80211_IFACE_ITER_NORMAL, | |
217 | iwl_mvm_scan_condition_iterator, | |
c3f8d0a3 | 218 | &global_cnt); |
ef67f18d | 219 | |
c3f8d0a3 | 220 | if (!global_cnt) |
ef67f18d AB |
221 | goto not_bound; |
222 | ||
2ce89cd6 | 223 | params->suspend_time = 30; |
44e9cd7e | 224 | params->max_out_time = 120; |
ef67f18d AB |
225 | |
226 | if (iwl_mvm_low_latency(mvm)) { | |
2ce89cd6 DS |
227 | if (mvm->fw->ucode_capa.api[0] & |
228 | IWL_UCODE_TLV_API_FRAGMENTED_SCAN) { | |
229 | params->suspend_time = 105; | |
c3f8d0a3 HD |
230 | /* |
231 | * If there is more than one active interface make | |
232 | * passive scan more fragmented. | |
233 | */ | |
ef17708e | 234 | frag_passive_dwell = 40; |
44e9cd7e | 235 | params->max_out_time = frag_passive_dwell; |
2ce89cd6 DS |
236 | } else { |
237 | params->suspend_time = 120; | |
238 | params->max_out_time = 120; | |
239 | } | |
240 | } | |
241 | ||
242 | if (frag_passive_dwell && (mvm->fw->ucode_capa.api[0] & | |
243 | IWL_UCODE_TLV_API_FRAGMENTED_SCAN)) { | |
244 | /* | |
245 | * P2P device scan should not be fragmented to avoid negative | |
246 | * impact on P2P device discovery. Configure max_out_time to be | |
247 | * equal to dwell time on passive channel. Take a longest | |
248 | * possible value, one that corresponds to 2GHz band | |
249 | */ | |
250 | if (vif->type == NL80211_IFTYPE_P2P_DEVICE) { | |
251 | u32 passive_dwell = | |
3cae0734 DS |
252 | iwl_mvm_get_passive_dwell(mvm, |
253 | IEEE80211_BAND_2GHZ); | |
2ce89cd6 DS |
254 | params->max_out_time = passive_dwell; |
255 | } else { | |
256 | params->passive_fragmented = true; | |
257 | } | |
50df8a30 | 258 | } |
8a110d9b | 259 | |
ab480030 JB |
260 | if (flags & NL80211_SCAN_FLAG_LOW_PRIORITY) |
261 | params->max_out_time = 200; | |
262 | ||
ef67f18d AB |
263 | not_bound: |
264 | ||
50df8a30 | 265 | for (band = IEEE80211_BAND_2GHZ; band < IEEE80211_NUM_BANDS; band++) { |
2ce89cd6 | 266 | if (params->passive_fragmented) |
190f1029 DS |
267 | params->dwell[band].fragmented = frag_passive_dwell; |
268 | ||
269 | params->dwell[band].passive = iwl_mvm_get_passive_dwell(mvm, | |
270 | band); | |
3cae0734 | 271 | params->dwell[band].active = iwl_mvm_get_active_dwell(mvm, band, |
50df8a30 AB |
272 | n_ssids); |
273 | } | |
61f6325d HD |
274 | } |
275 | ||
73897bd1 AO |
276 | static inline bool iwl_mvm_rrm_scan_needed(struct iwl_mvm *mvm) |
277 | { | |
278 | /* require rrm scan whenever the fw supports it */ | |
279 | return mvm->fw->ucode_capa.capa[0] & | |
280 | IWL_UCODE_TLV_CAPA_DS_PARAM_SET_IE_SUPPORT; | |
281 | } | |
282 | ||
48849a41 AO |
283 | static int iwl_mvm_max_scan_ie_fw_cmd_room(struct iwl_mvm *mvm, |
284 | bool is_sched_scan) | |
285 | { | |
286 | int max_probe_len; | |
287 | ||
1f940386 | 288 | max_probe_len = SCAN_OFFLOAD_PROBE_REQ_SIZE; |
48849a41 AO |
289 | |
290 | /* we create the 802.11 header and SSID element */ | |
291 | max_probe_len -= 24 + 2; | |
292 | ||
66dc5272 AO |
293 | /* DS parameter set element is added on 2.4GHZ band if required */ |
294 | if (iwl_mvm_rrm_scan_needed(mvm)) | |
295 | max_probe_len -= 3; | |
296 | ||
48849a41 AO |
297 | return max_probe_len; |
298 | } | |
299 | ||
300 | int iwl_mvm_max_scan_ie_len(struct iwl_mvm *mvm, bool is_sched_scan) | |
301 | { | |
302 | int max_ie_len = iwl_mvm_max_scan_ie_fw_cmd_room(mvm, is_sched_scan); | |
303 | ||
48849a41 AO |
304 | /* TODO: [BUG] This function should return the maximum allowed size of |
305 | * scan IEs, however the LMAC scan api contains both 2GHZ and 5GHZ IEs | |
306 | * in the same command. So the correct implementation of this function | |
307 | * is just iwl_mvm_max_scan_ie_fw_cmd_room() / 2. Currently the scan | |
308 | * command has only 512 bytes and it would leave us with about 240 | |
309 | * bytes for scan IEs, which is clearly not enough. So meanwhile | |
310 | * we will report an incorrect value. This may result in a failure to | |
311 | * issue a scan in unified_scan_lmac and unified_sched_scan_lmac | |
312 | * functions with -ENOBUFS, if a large enough probe will be provided. | |
313 | */ | |
314 | return max_ie_len; | |
315 | } | |
316 | ||
e5d74646 AB |
317 | int iwl_mvm_rx_scan_offload_iter_complete_notif(struct iwl_mvm *mvm, |
318 | struct iwl_rx_cmd_buffer *rxb, | |
319 | struct iwl_device_cmd *cmd) | |
320 | { | |
321 | struct iwl_rx_packet *pkt = rxb_addr(rxb); | |
1083fd73 | 322 | struct iwl_lmac_scan_complete_notif *notif = (void *)pkt->data; |
e5d74646 AB |
323 | |
324 | IWL_DEBUG_SCAN(mvm, | |
325 | "Scan offload iteration complete: status=0x%x scanned channels=%d\n", | |
326 | notif->status, notif->scanned_channels); | |
327 | return 0; | |
328 | } | |
329 | ||
fb98be5e DS |
330 | int iwl_mvm_rx_scan_offload_results(struct iwl_mvm *mvm, |
331 | struct iwl_rx_cmd_buffer *rxb, | |
332 | struct iwl_device_cmd *cmd) | |
35a000b7 | 333 | { |
d2496221 DS |
334 | IWL_DEBUG_SCAN(mvm, "Scheduled scan results\n"); |
335 | ieee80211_sched_scan_results(mvm->hw); | |
35a000b7 DS |
336 | |
337 | return 0; | |
338 | } | |
339 | ||
35a000b7 DS |
340 | int iwl_mvm_rx_scan_offload_complete_notif(struct iwl_mvm *mvm, |
341 | struct iwl_rx_cmd_buffer *rxb, | |
342 | struct iwl_device_cmd *cmd) | |
343 | { | |
344 | struct iwl_rx_packet *pkt = rxb_addr(rxb); | |
1f940386 | 345 | struct iwl_periodic_scan_complete *scan_notif; |
35a000b7 | 346 | |
1f940386 | 347 | scan_notif = (void *)pkt->data; |
fb98be5e | 348 | |
a6623e84 JB |
349 | /* scan status must be locked for proper checking */ |
350 | lockdep_assert_held(&mvm->mutex); | |
351 | ||
e820c2da | 352 | IWL_DEBUG_SCAN(mvm, |
fb98be5e DS |
353 | "%s completed, status %s, EBS status %s\n", |
354 | mvm->scan_status == IWL_MVM_SCAN_SCHED ? | |
355 | "Scheduled scan" : "Scan", | |
1f940386 | 356 | scan_notif->status == IWL_SCAN_OFFLOAD_COMPLETED ? |
fb98be5e | 357 | "completed" : "aborted", |
1f940386 | 358 | scan_notif->ebs_status == IWL_SCAN_EBS_SUCCESS ? |
fb98be5e | 359 | "success" : "failed"); |
e820c2da | 360 | |
35a000b7 | 361 | |
33ea27f6 AN |
362 | /* only call mac80211 completion if the stop was initiated by FW */ |
363 | if (mvm->scan_status == IWL_MVM_SCAN_SCHED) { | |
a6623e84 | 364 | mvm->scan_status = IWL_MVM_SCAN_NONE; |
33ea27f6 | 365 | ieee80211_sched_scan_stopped(mvm->hw); |
fb98be5e DS |
366 | } else if (mvm->scan_status == IWL_MVM_SCAN_OS) { |
367 | mvm->scan_status = IWL_MVM_SCAN_NONE; | |
368 | ieee80211_scan_completed(mvm->hw, | |
1f940386 | 369 | scan_notif->status == IWL_SCAN_OFFLOAD_ABORTED); |
4ff78181 | 370 | iwl_mvm_unref(mvm, IWL_MVM_REF_SCAN); |
33ea27f6 | 371 | } |
35a000b7 | 372 | |
1f940386 | 373 | if (scan_notif->ebs_status) |
5a4b2afa | 374 | mvm->last_ebs_successful = false; |
e820c2da | 375 | |
35a000b7 DS |
376 | return 0; |
377 | } | |
378 | ||
35a000b7 DS |
379 | static int iwl_ssid_exist(u8 *ssid, u8 ssid_len, struct iwl_ssid_ie *ssid_list) |
380 | { | |
381 | int i; | |
382 | ||
383 | for (i = 0; i < PROBE_OPTION_MAX; i++) { | |
384 | if (!ssid_list[i].len) | |
385 | break; | |
386 | if (ssid_list[i].len == ssid_len && | |
387 | !memcmp(ssid_list->ssid, ssid, ssid_len)) | |
388 | return i; | |
389 | } | |
390 | return -1; | |
391 | } | |
392 | ||
393 | static void iwl_scan_offload_build_ssid(struct cfg80211_sched_scan_request *req, | |
fb98be5e DS |
394 | struct iwl_ssid_ie *direct_scan, |
395 | u32 *ssid_bitmap, bool basic_ssid) | |
35a000b7 DS |
396 | { |
397 | int i, j; | |
398 | int index; | |
399 | ||
400 | /* | |
401 | * copy SSIDs from match list. | |
402 | * iwl_config_sched_scan_profiles() uses the order of these ssids to | |
403 | * config match list. | |
404 | */ | |
405 | for (i = 0; i < req->n_match_sets && i < PROBE_OPTION_MAX; i++) { | |
ea73cbce JB |
406 | /* skip empty SSID matchsets */ |
407 | if (!req->match_sets[i].ssid.ssid_len) | |
408 | continue; | |
fb98be5e DS |
409 | direct_scan[i].id = WLAN_EID_SSID; |
410 | direct_scan[i].len = req->match_sets[i].ssid.ssid_len; | |
411 | memcpy(direct_scan[i].ssid, req->match_sets[i].ssid.ssid, | |
412 | direct_scan[i].len); | |
35a000b7 DS |
413 | } |
414 | ||
415 | /* add SSIDs from scan SSID list */ | |
416 | *ssid_bitmap = 0; | |
417 | for (j = 0; j < req->n_ssids && i < PROBE_OPTION_MAX; j++) { | |
418 | index = iwl_ssid_exist(req->ssids[j].ssid, | |
419 | req->ssids[j].ssid_len, | |
fb98be5e | 420 | direct_scan); |
35a000b7 | 421 | if (index < 0) { |
fb98be5e | 422 | if (!req->ssids[j].ssid_len && basic_ssid) |
35a000b7 | 423 | continue; |
fb98be5e DS |
424 | direct_scan[i].id = WLAN_EID_SSID; |
425 | direct_scan[i].len = req->ssids[j].ssid_len; | |
426 | memcpy(direct_scan[i].ssid, req->ssids[j].ssid, | |
427 | direct_scan[i].len); | |
35a000b7 DS |
428 | *ssid_bitmap |= BIT(i + 1); |
429 | i++; | |
430 | } else { | |
431 | *ssid_bitmap |= BIT(index + 1); | |
432 | } | |
433 | } | |
434 | } | |
435 | ||
35a000b7 DS |
436 | int iwl_mvm_config_sched_scan_profiles(struct iwl_mvm *mvm, |
437 | struct cfg80211_sched_scan_request *req) | |
438 | { | |
439 | struct iwl_scan_offload_profile *profile; | |
440 | struct iwl_scan_offload_profile_cfg *profile_cfg; | |
441 | struct iwl_scan_offload_blacklist *blacklist; | |
442 | struct iwl_host_cmd cmd = { | |
443 | .id = SCAN_OFFLOAD_UPDATE_PROFILES_CMD, | |
35a000b7 DS |
444 | .len[1] = sizeof(*profile_cfg), |
445 | .dataflags[0] = IWL_HCMD_DFL_NOCOPY, | |
446 | .dataflags[1] = IWL_HCMD_DFL_NOCOPY, | |
447 | }; | |
448 | int blacklist_len; | |
449 | int i; | |
450 | int ret; | |
451 | ||
452 | if (WARN_ON(req->n_match_sets > IWL_SCAN_MAX_PROFILES)) | |
453 | return -EIO; | |
454 | ||
455 | if (mvm->fw->ucode_capa.flags & IWL_UCODE_TLV_FLAGS_SHORT_BL) | |
456 | blacklist_len = IWL_SCAN_SHORT_BLACKLIST_LEN; | |
457 | else | |
458 | blacklist_len = IWL_SCAN_MAX_BLACKLIST_LEN; | |
459 | ||
460 | blacklist = kzalloc(sizeof(*blacklist) * blacklist_len, GFP_KERNEL); | |
461 | if (!blacklist) | |
462 | return -ENOMEM; | |
463 | ||
464 | profile_cfg = kzalloc(sizeof(*profile_cfg), GFP_KERNEL); | |
465 | if (!profile_cfg) { | |
466 | ret = -ENOMEM; | |
467 | goto free_blacklist; | |
468 | } | |
469 | ||
470 | cmd.data[0] = blacklist; | |
471 | cmd.len[0] = sizeof(*blacklist) * blacklist_len; | |
472 | cmd.data[1] = profile_cfg; | |
473 | ||
474 | /* No blacklist configuration */ | |
475 | ||
476 | profile_cfg->num_profiles = req->n_match_sets; | |
477 | profile_cfg->active_clients = SCAN_CLIENT_SCHED_SCAN; | |
478 | profile_cfg->pass_match = SCAN_CLIENT_SCHED_SCAN; | |
479 | profile_cfg->match_notify = SCAN_CLIENT_SCHED_SCAN; | |
6e0bbe5e DS |
480 | if (!req->n_match_sets || !req->match_sets[0].ssid.ssid_len) |
481 | profile_cfg->any_beacon_notify = SCAN_CLIENT_SCHED_SCAN; | |
35a000b7 DS |
482 | |
483 | for (i = 0; i < req->n_match_sets; i++) { | |
484 | profile = &profile_cfg->profiles[i]; | |
485 | profile->ssid_index = i; | |
486 | /* Support any cipher and auth algorithm */ | |
487 | profile->unicast_cipher = 0xff; | |
488 | profile->auth_alg = 0xff; | |
489 | profile->network_type = IWL_NETWORK_TYPE_ANY; | |
490 | profile->band_selection = IWL_SCAN_OFFLOAD_SELECT_ANY; | |
491 | profile->client_bitmap = SCAN_CLIENT_SCHED_SCAN; | |
492 | } | |
493 | ||
494 | IWL_DEBUG_SCAN(mvm, "Sending scheduled scan profile config\n"); | |
495 | ||
496 | ret = iwl_mvm_send_cmd(mvm, &cmd); | |
497 | kfree(profile_cfg); | |
498 | free_blacklist: | |
499 | kfree(blacklist); | |
500 | ||
501 | return ret; | |
502 | } | |
503 | ||
d2496221 DS |
504 | static bool iwl_mvm_scan_pass_all(struct iwl_mvm *mvm, |
505 | struct cfg80211_sched_scan_request *req) | |
506 | { | |
507 | if (req->n_match_sets && req->match_sets[0].ssid.ssid_len) { | |
508 | IWL_DEBUG_SCAN(mvm, | |
509 | "Sending scheduled scan with filtering, n_match_sets %d\n", | |
510 | req->n_match_sets); | |
511 | return false; | |
512 | } | |
513 | ||
514 | IWL_DEBUG_SCAN(mvm, "Sending Scheduled scan without filtering\n"); | |
515 | return true; | |
516 | } | |
517 | ||
b141c235 LC |
518 | int iwl_mvm_scan_offload_start(struct iwl_mvm *mvm, |
519 | struct ieee80211_vif *vif, | |
520 | struct cfg80211_sched_scan_request *req, | |
521 | struct ieee80211_scan_ies *ies) | |
522 | { | |
523 | int ret; | |
524 | ||
b975e55a | 525 | if (mvm->fw->ucode_capa.capa[0] & IWL_UCODE_TLV_CAPA_UMAC_SCAN) { |
b141c235 LC |
526 | ret = iwl_mvm_config_sched_scan_profiles(mvm, req); |
527 | if (ret) | |
528 | return ret; | |
b975e55a | 529 | ret = iwl_mvm_sched_scan_umac(mvm, vif, req, ies); |
b141c235 | 530 | } else { |
d2496221 | 531 | mvm->scan_status = IWL_MVM_SCAN_SCHED; |
b141c235 LC |
532 | ret = iwl_mvm_config_sched_scan_profiles(mvm, req); |
533 | if (ret) | |
534 | return ret; | |
1f940386 | 535 | ret = iwl_mvm_unified_sched_scan_lmac(mvm, vif, req, ies); |
b141c235 LC |
536 | } |
537 | ||
538 | return ret; | |
539 | } | |
540 | ||
fb98be5e | 541 | static int iwl_mvm_send_scan_offload_abort(struct iwl_mvm *mvm) |
35a000b7 DS |
542 | { |
543 | int ret; | |
544 | struct iwl_host_cmd cmd = { | |
545 | .id = SCAN_OFFLOAD_ABORT_CMD, | |
35a000b7 DS |
546 | }; |
547 | u32 status; | |
548 | ||
549 | /* Exit instantly with error when device is not ready | |
550 | * to receive scan abort command or it does not perform | |
551 | * scheduled scan currently */ | |
1f940386 | 552 | if (mvm->scan_status == IWL_MVM_SCAN_NONE) |
35a000b7 DS |
553 | return -EIO; |
554 | ||
555 | ret = iwl_mvm_send_cmd_status(mvm, &cmd, &status); | |
556 | if (ret) | |
557 | return ret; | |
558 | ||
559 | if (status != CAN_ABORT_STATUS) { | |
560 | /* | |
561 | * The scan abort will return 1 for success or | |
562 | * 2 for "failure". A failure condition can be | |
563 | * due to simply not being in an active scan which | |
564 | * can occur if we send the scan abort before the | |
565 | * microcode has notified us that a scan is completed. | |
566 | */ | |
567 | IWL_DEBUG_SCAN(mvm, "SCAN OFFLOAD ABORT ret %d.\n", status); | |
33ea27f6 | 568 | ret = -ENOENT; |
35a000b7 DS |
569 | } |
570 | ||
571 | return ret; | |
572 | } | |
573 | ||
fb98be5e | 574 | int iwl_mvm_scan_offload_stop(struct iwl_mvm *mvm, bool notify) |
35a000b7 DS |
575 | { |
576 | int ret; | |
33ea27f6 AN |
577 | struct iwl_notification_wait wait_scan_done; |
578 | static const u8 scan_done_notif[] = { SCAN_OFFLOAD_COMPLETE, }; | |
fb98be5e | 579 | bool sched = mvm->scan_status == IWL_MVM_SCAN_SCHED; |
35a000b7 DS |
580 | |
581 | lockdep_assert_held(&mvm->mutex); | |
582 | ||
d2496221 DS |
583 | if (mvm->fw->ucode_capa.capa[0] & IWL_UCODE_TLV_CAPA_UMAC_SCAN) |
584 | return iwl_umac_scan_stop(mvm, IWL_UMAC_SCAN_UID_SCHED_SCAN, | |
585 | notify); | |
586 | ||
90ea15c1 EG |
587 | if (mvm->scan_status == IWL_MVM_SCAN_NONE) |
588 | return 0; | |
589 | ||
54331db9 LC |
590 | if (iwl_mvm_is_radio_killed(mvm)) { |
591 | ret = 0; | |
90ea15c1 | 592 | goto out; |
54331db9 | 593 | } |
90ea15c1 | 594 | |
33ea27f6 AN |
595 | iwl_init_notification_wait(&mvm->notif_wait, &wait_scan_done, |
596 | scan_done_notif, | |
597 | ARRAY_SIZE(scan_done_notif), | |
598 | NULL, NULL); | |
599 | ||
fb98be5e | 600 | ret = iwl_mvm_send_scan_offload_abort(mvm); |
33ea27f6 | 601 | if (ret) { |
fb98be5e DS |
602 | IWL_DEBUG_SCAN(mvm, "Send stop %sscan failed %d\n", |
603 | sched ? "offloaded " : "", ret); | |
33ea27f6 | 604 | iwl_remove_notification(&mvm->notif_wait, &wait_scan_done); |
54331db9 | 605 | goto out; |
33ea27f6 AN |
606 | } |
607 | ||
fb98be5e DS |
608 | IWL_DEBUG_SCAN(mvm, "Successfully sent stop %sscan\n", |
609 | sched ? "offloaded " : ""); | |
33ea27f6 AN |
610 | |
611 | ret = iwl_wait_notification(&mvm->notif_wait, &wait_scan_done, 1 * HZ); | |
54331db9 | 612 | out: |
33ea27f6 AN |
613 | /* |
614 | * Clear the scan status so the next scan requests will succeed. This | |
615 | * also ensures the Rx handler doesn't do anything, as the scan was | |
4ff78181 EP |
616 | * stopped from above. Since the rx handler won't do anything now, |
617 | * we have to release the scan reference here. | |
33ea27f6 | 618 | */ |
4ff78181 EP |
619 | if (mvm->scan_status == IWL_MVM_SCAN_OS) |
620 | iwl_mvm_unref(mvm, IWL_MVM_REF_SCAN); | |
621 | ||
33ea27f6 AN |
622 | mvm->scan_status = IWL_MVM_SCAN_NONE; |
623 | ||
fb98be5e DS |
624 | if (notify) { |
625 | if (sched) | |
626 | ieee80211_sched_scan_stopped(mvm->hw); | |
627 | else | |
628 | ieee80211_scan_completed(mvm->hw, true); | |
629 | } | |
636a2cdc | 630 | |
54331db9 | 631 | return ret; |
35a000b7 | 632 | } |
fb98be5e DS |
633 | |
634 | static void iwl_mvm_unified_scan_fill_tx_cmd(struct iwl_mvm *mvm, | |
635 | struct iwl_scan_req_tx_cmd *tx_cmd, | |
636 | bool no_cck) | |
637 | { | |
638 | tx_cmd[0].tx_flags = cpu_to_le32(TX_CMD_FLG_SEQ_CTL | | |
639 | TX_CMD_FLG_BT_DIS); | |
640 | tx_cmd[0].rate_n_flags = iwl_mvm_scan_rate_n_flags(mvm, | |
641 | IEEE80211_BAND_2GHZ, | |
642 | no_cck); | |
643 | tx_cmd[0].sta_id = mvm->aux_sta.sta_id; | |
644 | ||
645 | tx_cmd[1].tx_flags = cpu_to_le32(TX_CMD_FLG_SEQ_CTL | | |
646 | TX_CMD_FLG_BT_DIS); | |
647 | tx_cmd[1].rate_n_flags = iwl_mvm_scan_rate_n_flags(mvm, | |
648 | IEEE80211_BAND_5GHZ, | |
649 | no_cck); | |
650 | tx_cmd[1].sta_id = mvm->aux_sta.sta_id; | |
651 | } | |
652 | ||
653 | static void | |
654 | iwl_mvm_lmac_scan_cfg_channels(struct iwl_mvm *mvm, | |
655 | struct ieee80211_channel **channels, | |
656 | int n_channels, u32 ssid_bitmap, | |
657 | struct iwl_scan_req_unified_lmac *cmd) | |
658 | { | |
659 | struct iwl_scan_channel_cfg_lmac *channel_cfg = (void *)&cmd->data; | |
660 | int i; | |
661 | ||
662 | for (i = 0; i < n_channels; i++) { | |
663 | channel_cfg[i].channel_num = | |
664 | cpu_to_le16(channels[i]->hw_value); | |
665 | channel_cfg[i].iter_count = cpu_to_le16(1); | |
666 | channel_cfg[i].iter_interval = 0; | |
667 | channel_cfg[i].flags = | |
668 | cpu_to_le32(IWL_UNIFIED_SCAN_CHANNEL_PARTIAL | | |
669 | ssid_bitmap); | |
670 | } | |
671 | } | |
672 | ||
66dc5272 AO |
673 | static u8 *iwl_mvm_copy_and_insert_ds_elem(struct iwl_mvm *mvm, const u8 *ies, |
674 | size_t len, u8 *const pos) | |
675 | { | |
676 | static const u8 before_ds_params[] = { | |
677 | WLAN_EID_SSID, | |
678 | WLAN_EID_SUPP_RATES, | |
679 | WLAN_EID_REQUEST, | |
680 | WLAN_EID_EXT_SUPP_RATES, | |
681 | }; | |
682 | size_t offs; | |
683 | u8 *newpos = pos; | |
684 | ||
685 | if (!iwl_mvm_rrm_scan_needed(mvm)) { | |
686 | memcpy(newpos, ies, len); | |
687 | return newpos + len; | |
688 | } | |
689 | ||
690 | offs = ieee80211_ie_split(ies, len, | |
691 | before_ds_params, | |
692 | ARRAY_SIZE(before_ds_params), | |
693 | 0); | |
694 | ||
695 | memcpy(newpos, ies, offs); | |
696 | newpos += offs; | |
697 | ||
698 | /* Add a placeholder for DS Parameter Set element */ | |
699 | *newpos++ = WLAN_EID_DS_PARAMS; | |
700 | *newpos++ = 1; | |
701 | *newpos++ = 0; | |
702 | ||
703 | memcpy(newpos, ies + offs, len - offs); | |
704 | newpos += len - offs; | |
705 | ||
706 | return newpos; | |
707 | } | |
708 | ||
fb98be5e DS |
709 | static void |
710 | iwl_mvm_build_unified_scan_probe(struct iwl_mvm *mvm, struct ieee80211_vif *vif, | |
711 | struct ieee80211_scan_ies *ies, | |
effd05ac JB |
712 | struct iwl_scan_probe_req *preq, |
713 | const u8 *mac_addr, const u8 *mac_addr_mask) | |
fb98be5e | 714 | { |
fb98be5e | 715 | struct ieee80211_mgmt *frame = (struct ieee80211_mgmt *)preq->buf; |
66dc5272 | 716 | u8 *pos, *newpos; |
fb98be5e | 717 | |
effd05ac JB |
718 | /* |
719 | * Unfortunately, right now the offload scan doesn't support randomising | |
720 | * within the firmware, so until the firmware API is ready we implement | |
721 | * it in the driver. This means that the scan iterations won't really be | |
722 | * random, only when it's restarted, but at least that helps a bit. | |
723 | */ | |
724 | if (mac_addr) | |
725 | get_random_mask_addr(frame->sa, mac_addr, mac_addr_mask); | |
726 | else | |
727 | memcpy(frame->sa, vif->addr, ETH_ALEN); | |
728 | ||
fb98be5e DS |
729 | frame->frame_control = cpu_to_le16(IEEE80211_STYPE_PROBE_REQ); |
730 | eth_broadcast_addr(frame->da); | |
fb98be5e DS |
731 | eth_broadcast_addr(frame->bssid); |
732 | frame->seq_ctrl = 0; | |
733 | ||
734 | pos = frame->u.probe_req.variable; | |
735 | *pos++ = WLAN_EID_SSID; | |
736 | *pos++ = 0; | |
737 | ||
738 | preq->mac_header.offset = 0; | |
739 | preq->mac_header.len = cpu_to_le16(24 + 2); | |
740 | ||
66dc5272 AO |
741 | /* Insert ds parameter set element on 2.4 GHz band */ |
742 | newpos = iwl_mvm_copy_and_insert_ds_elem(mvm, | |
743 | ies->ies[IEEE80211_BAND_2GHZ], | |
744 | ies->len[IEEE80211_BAND_2GHZ], | |
745 | pos); | |
fb98be5e | 746 | preq->band_data[0].offset = cpu_to_le16(pos - preq->buf); |
66dc5272 AO |
747 | preq->band_data[0].len = cpu_to_le16(newpos - pos); |
748 | pos = newpos; | |
fb98be5e DS |
749 | |
750 | memcpy(pos, ies->ies[IEEE80211_BAND_5GHZ], | |
751 | ies->len[IEEE80211_BAND_5GHZ]); | |
752 | preq->band_data[1].offset = cpu_to_le16(pos - preq->buf); | |
753 | preq->band_data[1].len = cpu_to_le16(ies->len[IEEE80211_BAND_5GHZ]); | |
754 | pos += ies->len[IEEE80211_BAND_5GHZ]; | |
755 | ||
756 | memcpy(pos, ies->common_ies, ies->common_ie_len); | |
757 | preq->common_data.offset = cpu_to_le16(pos - preq->buf); | |
758 | preq->common_data.len = cpu_to_le16(ies->common_ie_len); | |
759 | } | |
760 | ||
761 | static void | |
762 | iwl_mvm_build_generic_unified_scan_cmd(struct iwl_mvm *mvm, | |
763 | struct iwl_scan_req_unified_lmac *cmd, | |
764 | struct iwl_mvm_scan_params *params) | |
765 | { | |
af91344c | 766 | memset(cmd, 0, ksize(cmd)); |
2ce89cd6 DS |
767 | cmd->active_dwell = params->dwell[IEEE80211_BAND_2GHZ].active; |
768 | cmd->passive_dwell = params->dwell[IEEE80211_BAND_2GHZ].passive; | |
769 | if (params->passive_fragmented) | |
770 | cmd->fragmented_dwell = | |
190f1029 | 771 | params->dwell[IEEE80211_BAND_2GHZ].fragmented; |
fb98be5e DS |
772 | cmd->rx_chain_select = iwl_mvm_scan_rx_chain(mvm); |
773 | cmd->max_out_time = cpu_to_le32(params->max_out_time); | |
774 | cmd->suspend_time = cpu_to_le32(params->suspend_time); | |
775 | cmd->scan_prio = cpu_to_le32(IWL_SCAN_PRIORITY_HIGH); | |
fb98be5e | 776 | cmd->iter_num = cpu_to_le32(1); |
af91344c | 777 | |
73897bd1 AO |
778 | if (iwl_mvm_rrm_scan_needed(mvm)) |
779 | cmd->scan_flags |= | |
780 | cpu_to_le32(IWL_MVM_LMAC_SCAN_FLAGS_RRM_ENABLED); | |
fb98be5e DS |
781 | } |
782 | ||
783 | int iwl_mvm_unified_scan_lmac(struct iwl_mvm *mvm, | |
784 | struct ieee80211_vif *vif, | |
785 | struct ieee80211_scan_request *req) | |
786 | { | |
787 | struct iwl_host_cmd hcmd = { | |
788 | .id = SCAN_OFFLOAD_REQUEST_CMD, | |
789 | .len = { sizeof(struct iwl_scan_req_unified_lmac) + | |
790 | sizeof(struct iwl_scan_channel_cfg_lmac) * | |
791 | mvm->fw->ucode_capa.n_scan_channels + | |
792 | sizeof(struct iwl_scan_probe_req), }, | |
793 | .data = { mvm->scan_cmd, }, | |
794 | .dataflags = { IWL_HCMD_DFL_NOCOPY, }, | |
795 | }; | |
796 | struct iwl_scan_req_unified_lmac *cmd = mvm->scan_cmd; | |
d2496221 | 797 | struct iwl_scan_probe_req *preq; |
fb98be5e DS |
798 | struct iwl_mvm_scan_params params = {}; |
799 | u32 flags; | |
c8660dd5 | 800 | u32 ssid_bitmap = 0; |
fb98be5e DS |
801 | int ret, i; |
802 | ||
803 | lockdep_assert_held(&mvm->mutex); | |
804 | ||
805 | /* we should have failed registration if scan_cmd was NULL */ | |
806 | if (WARN_ON(mvm->scan_cmd == NULL)) | |
807 | return -ENOMEM; | |
808 | ||
48849a41 AO |
809 | if (req->req.n_ssids > PROBE_OPTION_MAX || |
810 | req->ies.common_ie_len + req->ies.len[NL80211_BAND_2GHZ] + | |
811 | req->ies.len[NL80211_BAND_5GHZ] > | |
812 | iwl_mvm_max_scan_ie_fw_cmd_room(mvm, false) || | |
813 | req->req.n_channels > mvm->fw->ucode_capa.n_scan_channels) | |
814 | return -ENOBUFS; | |
fb98be5e DS |
815 | |
816 | mvm->scan_status = IWL_MVM_SCAN_OS; | |
817 | ||
818 | iwl_mvm_scan_calc_params(mvm, vif, req->req.n_ssids, req->req.flags, | |
819 | ¶ms); | |
820 | ||
821 | iwl_mvm_build_generic_unified_scan_cmd(mvm, cmd, ¶ms); | |
822 | ||
823 | cmd->n_channels = (u8)req->req.n_channels; | |
824 | ||
825 | flags = IWL_MVM_LMAC_SCAN_FLAG_PASS_ALL; | |
826 | ||
827 | if (req->req.n_ssids == 1 && req->req.ssids[0].ssid_len != 0) | |
828 | flags |= IWL_MVM_LMAC_SCAN_FLAG_PRE_CONNECTION; | |
829 | ||
830 | if (params.passive_fragmented) | |
831 | flags |= IWL_MVM_LMAC_SCAN_FLAG_FRAGMENTED; | |
832 | ||
833 | if (req->req.n_ssids == 0) | |
834 | flags |= IWL_MVM_LMAC_SCAN_FLAG_PASSIVE; | |
835 | ||
73897bd1 | 836 | cmd->scan_flags |= cpu_to_le32(flags); |
fb98be5e DS |
837 | |
838 | cmd->flags = iwl_mvm_scan_rxon_flags(req->req.channels[0]->band); | |
839 | cmd->filter_flags = cpu_to_le32(MAC_FILTER_ACCEPT_GRP | | |
840 | MAC_FILTER_IN_BEACON); | |
841 | iwl_mvm_unified_scan_fill_tx_cmd(mvm, cmd->tx_cmd, req->req.no_cck); | |
842 | iwl_mvm_scan_fill_ssids(cmd->direct_scan, req->req.ssids, | |
843 | req->req.n_ssids, 0); | |
844 | ||
845 | cmd->schedule[0].delay = 0; | |
846 | cmd->schedule[0].iterations = 1; | |
847 | cmd->schedule[0].full_scan_mul = 0; | |
848 | cmd->schedule[1].delay = 0; | |
849 | cmd->schedule[1].iterations = 0; | |
850 | cmd->schedule[1].full_scan_mul = 0; | |
851 | ||
1f9c418f DS |
852 | if (mvm->fw->ucode_capa.api[0] & IWL_UCODE_TLV_API_SINGLE_SCAN_EBS && |
853 | mvm->last_ebs_successful) { | |
854 | cmd->channel_opt[0].flags = | |
855 | cpu_to_le16(IWL_SCAN_CHANNEL_FLAG_EBS | | |
856 | IWL_SCAN_CHANNEL_FLAG_EBS_ACCURATE | | |
857 | IWL_SCAN_CHANNEL_FLAG_CACHE_ADD); | |
858 | cmd->channel_opt[0].non_ebs_ratio = | |
859 | cpu_to_le16(IWL_DENSE_EBS_SCAN_RATIO); | |
860 | cmd->channel_opt[1].flags = | |
861 | cpu_to_le16(IWL_SCAN_CHANNEL_FLAG_EBS | | |
862 | IWL_SCAN_CHANNEL_FLAG_EBS_ACCURATE | | |
863 | IWL_SCAN_CHANNEL_FLAG_CACHE_ADD); | |
864 | cmd->channel_opt[1].non_ebs_ratio = | |
865 | cpu_to_le16(IWL_SPARSE_EBS_SCAN_RATIO); | |
866 | } | |
867 | ||
fb98be5e DS |
868 | for (i = 1; i <= req->req.n_ssids; i++) |
869 | ssid_bitmap |= BIT(i); | |
870 | ||
871 | iwl_mvm_lmac_scan_cfg_channels(mvm, req->req.channels, | |
872 | req->req.n_channels, ssid_bitmap, | |
873 | cmd); | |
874 | ||
d2496221 DS |
875 | preq = (void *)(cmd->data + sizeof(struct iwl_scan_channel_cfg_lmac) * |
876 | mvm->fw->ucode_capa.n_scan_channels); | |
877 | ||
effd05ac JB |
878 | iwl_mvm_build_unified_scan_probe(mvm, vif, &req->ies, preq, |
879 | req->req.flags & NL80211_SCAN_FLAG_RANDOM_ADDR ? | |
880 | req->req.mac_addr : NULL, | |
881 | req->req.mac_addr_mask); | |
fb98be5e DS |
882 | |
883 | ret = iwl_mvm_send_cmd(mvm, &hcmd); | |
884 | if (!ret) { | |
885 | IWL_DEBUG_SCAN(mvm, "Scan request was sent successfully\n"); | |
886 | } else { | |
887 | /* | |
888 | * If the scan failed, it usually means that the FW was unable | |
889 | * to allocate the time events. Warn on it, but maybe we | |
890 | * should try to send the command again with different params. | |
891 | */ | |
892 | IWL_ERR(mvm, "Scan failed! ret %d\n", ret); | |
893 | mvm->scan_status = IWL_MVM_SCAN_NONE; | |
894 | ret = -EIO; | |
895 | } | |
896 | return ret; | |
897 | } | |
898 | ||
899 | int iwl_mvm_unified_sched_scan_lmac(struct iwl_mvm *mvm, | |
900 | struct ieee80211_vif *vif, | |
901 | struct cfg80211_sched_scan_request *req, | |
902 | struct ieee80211_scan_ies *ies) | |
903 | { | |
904 | struct iwl_host_cmd hcmd = { | |
905 | .id = SCAN_OFFLOAD_REQUEST_CMD, | |
906 | .len = { sizeof(struct iwl_scan_req_unified_lmac) + | |
907 | sizeof(struct iwl_scan_channel_cfg_lmac) * | |
908 | mvm->fw->ucode_capa.n_scan_channels + | |
909 | sizeof(struct iwl_scan_probe_req), }, | |
910 | .data = { mvm->scan_cmd, }, | |
911 | .dataflags = { IWL_HCMD_DFL_NOCOPY, }, | |
912 | }; | |
913 | struct iwl_scan_req_unified_lmac *cmd = mvm->scan_cmd; | |
d2496221 | 914 | struct iwl_scan_probe_req *preq; |
fb98be5e DS |
915 | struct iwl_mvm_scan_params params = {}; |
916 | int ret; | |
917 | u32 flags = 0, ssid_bitmap = 0; | |
918 | ||
919 | lockdep_assert_held(&mvm->mutex); | |
920 | ||
921 | /* we should have failed registration if scan_cmd was NULL */ | |
922 | if (WARN_ON(mvm->scan_cmd == NULL)) | |
923 | return -ENOMEM; | |
924 | ||
48849a41 AO |
925 | if (req->n_ssids > PROBE_OPTION_MAX || |
926 | ies->common_ie_len + ies->len[NL80211_BAND_2GHZ] + | |
927 | ies->len[NL80211_BAND_5GHZ] > | |
928 | iwl_mvm_max_scan_ie_fw_cmd_room(mvm, true) || | |
929 | req->n_channels > mvm->fw->ucode_capa.n_scan_channels) | |
fb98be5e DS |
930 | return -ENOBUFS; |
931 | ||
932 | iwl_mvm_scan_calc_params(mvm, vif, req->n_ssids, 0, ¶ms); | |
933 | ||
934 | iwl_mvm_build_generic_unified_scan_cmd(mvm, cmd, ¶ms); | |
935 | ||
936 | cmd->n_channels = (u8)req->n_channels; | |
937 | ||
2250fd94 LC |
938 | cmd->delay = cpu_to_le32(req->delay); |
939 | ||
d2496221 | 940 | if (iwl_mvm_scan_pass_all(mvm, req)) |
fb98be5e | 941 | flags |= IWL_MVM_LMAC_SCAN_FLAG_PASS_ALL; |
7e2a3883 DS |
942 | else |
943 | flags |= IWL_MVM_LMAC_SCAN_FLAG_MATCH; | |
fb98be5e DS |
944 | |
945 | if (req->n_ssids == 1 && req->ssids[0].ssid_len != 0) | |
946 | flags |= IWL_MVM_LMAC_SCAN_FLAG_PRE_CONNECTION; | |
947 | ||
948 | if (params.passive_fragmented) | |
949 | flags |= IWL_MVM_LMAC_SCAN_FLAG_FRAGMENTED; | |
950 | ||
951 | if (req->n_ssids == 0) | |
952 | flags |= IWL_MVM_LMAC_SCAN_FLAG_PASSIVE; | |
953 | ||
e5d74646 AB |
954 | #ifdef CONFIG_IWLWIFI_DEBUGFS |
955 | if (mvm->scan_iter_notif_enabled) | |
956 | flags |= IWL_MVM_LMAC_SCAN_FLAG_ITER_COMPLETE; | |
957 | #endif | |
958 | ||
73897bd1 | 959 | cmd->scan_flags |= cpu_to_le32(flags); |
fb98be5e DS |
960 | |
961 | cmd->flags = iwl_mvm_scan_rxon_flags(req->channels[0]->band); | |
962 | cmd->filter_flags = cpu_to_le32(MAC_FILTER_ACCEPT_GRP | | |
963 | MAC_FILTER_IN_BEACON); | |
964 | iwl_mvm_unified_scan_fill_tx_cmd(mvm, cmd->tx_cmd, false); | |
965 | iwl_scan_offload_build_ssid(req, cmd->direct_scan, &ssid_bitmap, false); | |
966 | ||
b14fc2be | 967 | cmd->schedule[0].delay = cpu_to_le16(req->interval / MSEC_PER_SEC); |
fb98be5e DS |
968 | cmd->schedule[0].iterations = IWL_FAST_SCHED_SCAN_ITERATIONS; |
969 | cmd->schedule[0].full_scan_mul = 1; | |
970 | ||
b14fc2be | 971 | cmd->schedule[1].delay = cpu_to_le16(req->interval / MSEC_PER_SEC); |
fb98be5e DS |
972 | cmd->schedule[1].iterations = 0xff; |
973 | cmd->schedule[1].full_scan_mul = IWL_FULL_SCAN_MULTIPLIER; | |
974 | ||
1f9c418f DS |
975 | if (mvm->fw->ucode_capa.flags & IWL_UCODE_TLV_FLAGS_EBS_SUPPORT && |
976 | mvm->last_ebs_successful) { | |
977 | cmd->channel_opt[0].flags = | |
978 | cpu_to_le16(IWL_SCAN_CHANNEL_FLAG_EBS | | |
979 | IWL_SCAN_CHANNEL_FLAG_EBS_ACCURATE | | |
980 | IWL_SCAN_CHANNEL_FLAG_CACHE_ADD); | |
981 | cmd->channel_opt[0].non_ebs_ratio = | |
982 | cpu_to_le16(IWL_DENSE_EBS_SCAN_RATIO); | |
983 | cmd->channel_opt[1].flags = | |
984 | cpu_to_le16(IWL_SCAN_CHANNEL_FLAG_EBS | | |
985 | IWL_SCAN_CHANNEL_FLAG_EBS_ACCURATE | | |
986 | IWL_SCAN_CHANNEL_FLAG_CACHE_ADD); | |
987 | cmd->channel_opt[1].non_ebs_ratio = | |
988 | cpu_to_le16(IWL_SPARSE_EBS_SCAN_RATIO); | |
989 | } | |
990 | ||
fb98be5e DS |
991 | iwl_mvm_lmac_scan_cfg_channels(mvm, req->channels, req->n_channels, |
992 | ssid_bitmap, cmd); | |
993 | ||
d2496221 DS |
994 | preq = (void *)(cmd->data + sizeof(struct iwl_scan_channel_cfg_lmac) * |
995 | mvm->fw->ucode_capa.n_scan_channels); | |
996 | ||
effd05ac JB |
997 | iwl_mvm_build_unified_scan_probe(mvm, vif, ies, preq, |
998 | req->flags & NL80211_SCAN_FLAG_RANDOM_ADDR ? | |
999 | req->mac_addr : NULL, | |
1000 | req->mac_addr_mask); | |
fb98be5e DS |
1001 | |
1002 | ret = iwl_mvm_send_cmd(mvm, &hcmd); | |
1003 | if (!ret) { | |
1004 | IWL_DEBUG_SCAN(mvm, | |
1005 | "Sched scan request was sent successfully\n"); | |
1006 | } else { | |
1007 | /* | |
1008 | * If the scan failed, it usually means that the FW was unable | |
1009 | * to allocate the time events. Warn on it, but maybe we | |
1010 | * should try to send the command again with different params. | |
1011 | */ | |
1012 | IWL_ERR(mvm, "Sched scan failed! ret %d\n", ret); | |
1013 | mvm->scan_status = IWL_MVM_SCAN_NONE; | |
1014 | ret = -EIO; | |
1015 | } | |
1016 | return ret; | |
1017 | } | |
1018 | ||
1019 | ||
1020 | int iwl_mvm_cancel_scan(struct iwl_mvm *mvm) | |
1021 | { | |
d2496221 DS |
1022 | if (mvm->fw->ucode_capa.capa[0] & IWL_UCODE_TLV_CAPA_UMAC_SCAN) |
1023 | return iwl_umac_scan_stop(mvm, IWL_UMAC_SCAN_UID_REG_SCAN, | |
1024 | true); | |
1025 | ||
9b520d84 EG |
1026 | if (mvm->scan_status == IWL_MVM_SCAN_NONE) |
1027 | return 0; | |
1028 | ||
1029 | if (iwl_mvm_is_radio_killed(mvm)) { | |
1030 | ieee80211_scan_completed(mvm->hw, true); | |
1031 | iwl_mvm_unref(mvm, IWL_MVM_REF_SCAN); | |
1032 | mvm->scan_status = IWL_MVM_SCAN_NONE; | |
1033 | return 0; | |
1034 | } | |
1035 | ||
1f940386 | 1036 | return iwl_mvm_scan_offload_stop(mvm, true); |
fb98be5e | 1037 | } |
d2496221 DS |
1038 | |
1039 | /* UMAC scan API */ | |
1040 | ||
1041 | struct iwl_umac_scan_done { | |
1042 | struct iwl_mvm *mvm; | |
1043 | enum iwl_umac_scan_uid_type type; | |
1044 | }; | |
1045 | ||
1046 | static int rate_to_scan_rate_flag(unsigned int rate) | |
1047 | { | |
1048 | static const int rate_to_scan_rate[IWL_RATE_COUNT] = { | |
1049 | [IWL_RATE_1M_INDEX] = SCAN_CONFIG_RATE_1M, | |
1050 | [IWL_RATE_2M_INDEX] = SCAN_CONFIG_RATE_2M, | |
1051 | [IWL_RATE_5M_INDEX] = SCAN_CONFIG_RATE_5M, | |
1052 | [IWL_RATE_11M_INDEX] = SCAN_CONFIG_RATE_11M, | |
1053 | [IWL_RATE_6M_INDEX] = SCAN_CONFIG_RATE_6M, | |
1054 | [IWL_RATE_9M_INDEX] = SCAN_CONFIG_RATE_9M, | |
1055 | [IWL_RATE_12M_INDEX] = SCAN_CONFIG_RATE_12M, | |
1056 | [IWL_RATE_18M_INDEX] = SCAN_CONFIG_RATE_18M, | |
1057 | [IWL_RATE_24M_INDEX] = SCAN_CONFIG_RATE_24M, | |
1058 | [IWL_RATE_36M_INDEX] = SCAN_CONFIG_RATE_36M, | |
1059 | [IWL_RATE_48M_INDEX] = SCAN_CONFIG_RATE_48M, | |
1060 | [IWL_RATE_54M_INDEX] = SCAN_CONFIG_RATE_54M, | |
1061 | }; | |
1062 | ||
1063 | return rate_to_scan_rate[rate]; | |
1064 | } | |
1065 | ||
1066 | static __le32 iwl_mvm_scan_config_rates(struct iwl_mvm *mvm) | |
1067 | { | |
1068 | struct ieee80211_supported_band *band; | |
1069 | unsigned int rates = 0; | |
1070 | int i; | |
1071 | ||
1072 | band = &mvm->nvm_data->bands[IEEE80211_BAND_2GHZ]; | |
1073 | for (i = 0; i < band->n_bitrates; i++) | |
1074 | rates |= rate_to_scan_rate_flag(band->bitrates[i].hw_value); | |
1075 | band = &mvm->nvm_data->bands[IEEE80211_BAND_5GHZ]; | |
1076 | for (i = 0; i < band->n_bitrates; i++) | |
1077 | rates |= rate_to_scan_rate_flag(band->bitrates[i].hw_value); | |
1078 | ||
1079 | /* Set both basic rates and supported rates */ | |
1080 | rates |= SCAN_CONFIG_SUPPORTED_RATE(rates); | |
1081 | ||
1082 | return cpu_to_le32(rates); | |
1083 | } | |
1084 | ||
1085 | int iwl_mvm_config_scan(struct iwl_mvm *mvm) | |
1086 | { | |
1087 | ||
1088 | struct iwl_scan_config *scan_config; | |
1089 | struct ieee80211_supported_band *band; | |
1090 | int num_channels = | |
1091 | mvm->nvm_data->bands[IEEE80211_BAND_2GHZ].n_channels + | |
1092 | mvm->nvm_data->bands[IEEE80211_BAND_5GHZ].n_channels; | |
1093 | int ret, i, j = 0, cmd_size, data_size; | |
1094 | struct iwl_host_cmd cmd = { | |
1095 | .id = SCAN_CFG_CMD, | |
1096 | }; | |
1097 | ||
1098 | if (WARN_ON(num_channels > mvm->fw->ucode_capa.n_scan_channels)) | |
1099 | return -ENOBUFS; | |
1100 | ||
1101 | cmd_size = sizeof(*scan_config) + mvm->fw->ucode_capa.n_scan_channels; | |
1102 | ||
1103 | scan_config = kzalloc(cmd_size, GFP_KERNEL); | |
1104 | if (!scan_config) | |
1105 | return -ENOMEM; | |
1106 | ||
1107 | data_size = cmd_size - sizeof(struct iwl_mvm_umac_cmd_hdr); | |
1108 | scan_config->hdr.size = cpu_to_le16(data_size); | |
1109 | scan_config->flags = cpu_to_le32(SCAN_CONFIG_FLAG_ACTIVATE | | |
1110 | SCAN_CONFIG_FLAG_ALLOW_CHUB_REQS | | |
1111 | SCAN_CONFIG_FLAG_SET_TX_CHAINS | | |
1112 | SCAN_CONFIG_FLAG_SET_RX_CHAINS | | |
1113 | SCAN_CONFIG_FLAG_SET_ALL_TIMES | | |
1114 | SCAN_CONFIG_FLAG_SET_LEGACY_RATES | | |
1115 | SCAN_CONFIG_FLAG_SET_MAC_ADDR | | |
1116 | SCAN_CONFIG_FLAG_SET_CHANNEL_FLAGS| | |
1117 | SCAN_CONFIG_N_CHANNELS(num_channels)); | |
a0544272 | 1118 | scan_config->tx_chains = cpu_to_le32(iwl_mvm_get_valid_tx_ant(mvm)); |
d2496221 DS |
1119 | scan_config->rx_chains = cpu_to_le32(iwl_mvm_scan_rx_ant(mvm)); |
1120 | scan_config->legacy_rates = iwl_mvm_scan_config_rates(mvm); | |
1121 | scan_config->out_of_channel_time = cpu_to_le32(170); | |
1122 | scan_config->suspend_time = cpu_to_le32(30); | |
1123 | scan_config->dwell_active = 20; | |
1124 | scan_config->dwell_passive = 110; | |
1125 | scan_config->dwell_fragmented = 20; | |
1126 | ||
1127 | memcpy(&scan_config->mac_addr, &mvm->addresses[0].addr, ETH_ALEN); | |
1128 | ||
1129 | scan_config->bcast_sta_id = mvm->aux_sta.sta_id; | |
1130 | scan_config->channel_flags = IWL_CHANNEL_FLAG_EBS | | |
1131 | IWL_CHANNEL_FLAG_ACCURATE_EBS | | |
1132 | IWL_CHANNEL_FLAG_EBS_ADD | | |
1133 | IWL_CHANNEL_FLAG_PRE_SCAN_PASSIVE2ACTIVE; | |
1134 | ||
1135 | band = &mvm->nvm_data->bands[IEEE80211_BAND_2GHZ]; | |
1136 | for (i = 0; i < band->n_channels; i++, j++) | |
a25d40e2 | 1137 | scan_config->channel_array[j] = band->channels[i].hw_value; |
d2496221 DS |
1138 | band = &mvm->nvm_data->bands[IEEE80211_BAND_5GHZ]; |
1139 | for (i = 0; i < band->n_channels; i++, j++) | |
a25d40e2 | 1140 | scan_config->channel_array[j] = band->channels[i].hw_value; |
d2496221 DS |
1141 | |
1142 | cmd.data[0] = scan_config; | |
1143 | cmd.len[0] = cmd_size; | |
1144 | cmd.dataflags[0] = IWL_HCMD_DFL_NOCOPY; | |
1145 | ||
1146 | IWL_DEBUG_SCAN(mvm, "Sending UMAC scan config\n"); | |
1147 | ||
1148 | ret = iwl_mvm_send_cmd(mvm, &cmd); | |
1149 | ||
1150 | kfree(scan_config); | |
1151 | return ret; | |
1152 | } | |
1153 | ||
1154 | static int iwl_mvm_find_scan_uid(struct iwl_mvm *mvm, u32 uid) | |
1155 | { | |
1156 | int i; | |
1157 | ||
1158 | for (i = 0; i < IWL_MVM_MAX_SIMULTANEOUS_SCANS; i++) | |
1159 | if (mvm->scan_uid[i] == uid) | |
1160 | return i; | |
1161 | ||
1162 | return i; | |
1163 | } | |
1164 | ||
1165 | static int iwl_mvm_find_free_scan_uid(struct iwl_mvm *mvm) | |
1166 | { | |
1167 | return iwl_mvm_find_scan_uid(mvm, 0); | |
1168 | } | |
1169 | ||
1170 | static bool iwl_mvm_find_scan_type(struct iwl_mvm *mvm, | |
1171 | enum iwl_umac_scan_uid_type type) | |
1172 | { | |
1173 | int i; | |
1174 | ||
1175 | for (i = 0; i < IWL_MVM_MAX_SIMULTANEOUS_SCANS; i++) | |
1176 | if (mvm->scan_uid[i] & type) | |
1177 | return true; | |
1178 | ||
1179 | return false; | |
1180 | } | |
1181 | ||
963221be AB |
1182 | static int iwl_mvm_find_first_scan(struct iwl_mvm *mvm, |
1183 | enum iwl_umac_scan_uid_type type) | |
1184 | { | |
1185 | int i; | |
1186 | ||
1187 | for (i = 0; i < IWL_MVM_MAX_SIMULTANEOUS_SCANS; i++) | |
1188 | if (mvm->scan_uid[i] & type) | |
1189 | return i; | |
1190 | ||
1191 | return i; | |
1192 | } | |
1193 | ||
d2496221 DS |
1194 | static u32 iwl_generate_scan_uid(struct iwl_mvm *mvm, |
1195 | enum iwl_umac_scan_uid_type type) | |
1196 | { | |
1197 | u32 uid; | |
1198 | ||
1199 | /* make sure exactly one bit is on in scan type */ | |
1200 | WARN_ON(hweight8(type) != 1); | |
1201 | ||
1202 | /* | |
1203 | * Make sure scan uids are unique. If one scan lasts long time while | |
1204 | * others are completing frequently, the seq number will wrap up and | |
1205 | * we may have more than one scan with the same uid. | |
1206 | */ | |
1207 | do { | |
1208 | uid = type | (mvm->scan_seq_num << | |
1209 | IWL_UMAC_SCAN_UID_SEQ_OFFSET); | |
1210 | mvm->scan_seq_num++; | |
1211 | } while (iwl_mvm_find_scan_uid(mvm, uid) < | |
1212 | IWL_MVM_MAX_SIMULTANEOUS_SCANS); | |
1213 | ||
1214 | IWL_DEBUG_SCAN(mvm, "Generated scan UID %u\n", uid); | |
1215 | ||
1216 | return uid; | |
1217 | } | |
1218 | ||
1219 | static void | |
1220 | iwl_mvm_build_generic_umac_scan_cmd(struct iwl_mvm *mvm, | |
1221 | struct iwl_scan_req_umac *cmd, | |
1222 | struct iwl_mvm_scan_params *params) | |
1223 | { | |
1224 | memset(cmd, 0, ksize(cmd)); | |
1225 | cmd->hdr.size = cpu_to_le16(iwl_mvm_scan_size(mvm) - | |
1226 | sizeof(struct iwl_mvm_umac_cmd_hdr)); | |
1227 | cmd->active_dwell = params->dwell[IEEE80211_BAND_2GHZ].active; | |
1228 | cmd->passive_dwell = params->dwell[IEEE80211_BAND_2GHZ].passive; | |
1229 | if (params->passive_fragmented) | |
1230 | cmd->fragmented_dwell = | |
190f1029 | 1231 | params->dwell[IEEE80211_BAND_2GHZ].fragmented; |
d2496221 DS |
1232 | cmd->max_out_time = cpu_to_le32(params->max_out_time); |
1233 | cmd->suspend_time = cpu_to_le32(params->suspend_time); | |
1234 | cmd->scan_priority = cpu_to_le32(IWL_SCAN_PRIORITY_HIGH); | |
1235 | } | |
1236 | ||
1237 | static void | |
1238 | iwl_mvm_umac_scan_cfg_channels(struct iwl_mvm *mvm, | |
1239 | struct ieee80211_channel **channels, | |
1240 | int n_channels, u32 ssid_bitmap, | |
1241 | struct iwl_scan_req_umac *cmd) | |
1242 | { | |
1243 | struct iwl_scan_channel_cfg_umac *channel_cfg = (void *)&cmd->data; | |
1244 | int i; | |
1245 | ||
1246 | for (i = 0; i < n_channels; i++) { | |
1247 | channel_cfg[i].flags = cpu_to_le32(ssid_bitmap); | |
1248 | channel_cfg[i].channel_num = channels[i]->hw_value; | |
1249 | channel_cfg[i].iter_count = 1; | |
1250 | channel_cfg[i].iter_interval = 0; | |
1251 | } | |
1252 | } | |
1253 | ||
1254 | static u32 iwl_mvm_scan_umac_common_flags(struct iwl_mvm *mvm, int n_ssids, | |
1255 | struct cfg80211_ssid *ssids, | |
1256 | int fragmented) | |
1257 | { | |
1258 | int flags = 0; | |
1259 | ||
1260 | if (n_ssids == 0) | |
1261 | flags = IWL_UMAC_SCAN_GEN_FLAGS_PASSIVE; | |
1262 | ||
1263 | if (n_ssids == 1 && ssids[0].ssid_len != 0) | |
1264 | flags |= IWL_UMAC_SCAN_GEN_FLAGS_PRE_CONNECT; | |
1265 | ||
1266 | if (fragmented) | |
1267 | flags |= IWL_UMAC_SCAN_GEN_FLAGS_FRAGMENTED; | |
1268 | ||
1269 | if (iwl_mvm_rrm_scan_needed(mvm)) | |
1270 | flags |= IWL_UMAC_SCAN_GEN_FLAGS_RRM_ENABLED; | |
1271 | ||
1272 | return flags; | |
1273 | } | |
1274 | ||
1275 | int iwl_mvm_scan_umac(struct iwl_mvm *mvm, struct ieee80211_vif *vif, | |
1276 | struct ieee80211_scan_request *req) | |
1277 | { | |
1278 | struct iwl_host_cmd hcmd = { | |
1279 | .id = SCAN_REQ_UMAC, | |
1280 | .len = { iwl_mvm_scan_size(mvm), }, | |
1281 | .data = { mvm->scan_cmd, }, | |
1282 | .dataflags = { IWL_HCMD_DFL_NOCOPY, }, | |
1283 | }; | |
1284 | struct iwl_scan_req_umac *cmd = mvm->scan_cmd; | |
1285 | struct iwl_scan_req_umac_tail *sec_part = (void *)&cmd->data + | |
1286 | sizeof(struct iwl_scan_channel_cfg_umac) * | |
1287 | mvm->fw->ucode_capa.n_scan_channels; | |
1288 | struct iwl_mvm_scan_params params = {}; | |
1289 | u32 uid, flags; | |
c8660dd5 | 1290 | u32 ssid_bitmap = 0; |
d2496221 DS |
1291 | int ret, i, uid_idx; |
1292 | ||
1293 | lockdep_assert_held(&mvm->mutex); | |
1294 | ||
1295 | uid_idx = iwl_mvm_find_free_scan_uid(mvm); | |
1296 | if (uid_idx >= IWL_MVM_MAX_SIMULTANEOUS_SCANS) | |
1297 | return -EBUSY; | |
1298 | ||
1299 | /* we should have failed registration if scan_cmd was NULL */ | |
1300 | if (WARN_ON(mvm->scan_cmd == NULL)) | |
1301 | return -ENOMEM; | |
1302 | ||
1303 | if (WARN_ON(req->req.n_ssids > PROBE_OPTION_MAX || | |
1304 | req->ies.common_ie_len + | |
1305 | req->ies.len[NL80211_BAND_2GHZ] + | |
1306 | req->ies.len[NL80211_BAND_5GHZ] + 24 + 2 > | |
1307 | SCAN_OFFLOAD_PROBE_REQ_SIZE || req->req.n_channels > | |
1308 | mvm->fw->ucode_capa.n_scan_channels)) | |
1309 | return -ENOBUFS; | |
1310 | ||
1311 | iwl_mvm_scan_calc_params(mvm, vif, req->req.n_ssids, req->req.flags, | |
1312 | ¶ms); | |
1313 | ||
1314 | iwl_mvm_build_generic_umac_scan_cmd(mvm, cmd, ¶ms); | |
1315 | ||
1316 | uid = iwl_generate_scan_uid(mvm, IWL_UMAC_SCAN_UID_REG_SCAN); | |
1317 | mvm->scan_uid[uid_idx] = uid; | |
1318 | cmd->uid = cpu_to_le32(uid); | |
1319 | ||
1320 | cmd->ooc_priority = cpu_to_le32(IWL_SCAN_PRIORITY_HIGH); | |
1321 | ||
1322 | flags = iwl_mvm_scan_umac_common_flags(mvm, req->req.n_ssids, | |
1323 | req->req.ssids, | |
1324 | params.passive_fragmented); | |
1325 | ||
1326 | flags |= IWL_UMAC_SCAN_GEN_FLAGS_PASS_ALL; | |
1327 | ||
1328 | cmd->general_flags = cpu_to_le32(flags); | |
4db6558c HD |
1329 | |
1330 | if (mvm->fw->ucode_capa.api[0] & IWL_UCODE_TLV_API_SINGLE_SCAN_EBS && | |
1331 | mvm->last_ebs_successful) | |
1332 | cmd->channel_flags = IWL_SCAN_CHANNEL_FLAG_EBS | | |
1333 | IWL_SCAN_CHANNEL_FLAG_EBS_ACCURATE | | |
1334 | IWL_SCAN_CHANNEL_FLAG_CACHE_ADD; | |
1335 | ||
d2496221 DS |
1336 | cmd->n_channels = req->req.n_channels; |
1337 | ||
1338 | for (i = 0; i < req->req.n_ssids; i++) | |
1339 | ssid_bitmap |= BIT(i); | |
1340 | ||
1341 | iwl_mvm_umac_scan_cfg_channels(mvm, req->req.channels, | |
1342 | req->req.n_channels, ssid_bitmap, cmd); | |
1343 | ||
1344 | sec_part->schedule[0].iter_count = 1; | |
1345 | sec_part->delay = 0; | |
1346 | ||
effd05ac JB |
1347 | iwl_mvm_build_unified_scan_probe(mvm, vif, &req->ies, &sec_part->preq, |
1348 | req->req.flags & NL80211_SCAN_FLAG_RANDOM_ADDR ? | |
1349 | req->req.mac_addr : NULL, | |
1350 | req->req.mac_addr_mask); | |
d2496221 DS |
1351 | |
1352 | iwl_mvm_scan_fill_ssids(sec_part->direct_scan, req->req.ssids, | |
1353 | req->req.n_ssids, 0); | |
1354 | ||
1355 | ret = iwl_mvm_send_cmd(mvm, &hcmd); | |
1356 | if (!ret) { | |
1357 | IWL_DEBUG_SCAN(mvm, | |
1358 | "Scan request was sent successfully\n"); | |
1359 | } else { | |
1360 | /* | |
1361 | * If the scan failed, it usually means that the FW was unable | |
1362 | * to allocate the time events. Warn on it, but maybe we | |
1363 | * should try to send the command again with different params. | |
1364 | */ | |
1365 | IWL_ERR(mvm, "Scan failed! ret %d\n", ret); | |
1366 | } | |
1367 | return ret; | |
1368 | } | |
1369 | ||
1370 | int iwl_mvm_sched_scan_umac(struct iwl_mvm *mvm, struct ieee80211_vif *vif, | |
1371 | struct cfg80211_sched_scan_request *req, | |
1372 | struct ieee80211_scan_ies *ies) | |
1373 | { | |
1374 | ||
1375 | struct iwl_host_cmd hcmd = { | |
1376 | .id = SCAN_REQ_UMAC, | |
1377 | .len = { iwl_mvm_scan_size(mvm), }, | |
1378 | .data = { mvm->scan_cmd, }, | |
1379 | .dataflags = { IWL_HCMD_DFL_NOCOPY, }, | |
1380 | }; | |
1381 | struct iwl_scan_req_umac *cmd = mvm->scan_cmd; | |
1382 | struct iwl_scan_req_umac_tail *sec_part = (void *)&cmd->data + | |
1383 | sizeof(struct iwl_scan_channel_cfg_umac) * | |
1384 | mvm->fw->ucode_capa.n_scan_channels; | |
1385 | struct iwl_mvm_scan_params params = {}; | |
1386 | u32 uid, flags; | |
c8660dd5 | 1387 | u32 ssid_bitmap = 0; |
d2496221 DS |
1388 | int ret, uid_idx; |
1389 | ||
1390 | lockdep_assert_held(&mvm->mutex); | |
1391 | ||
1392 | uid_idx = iwl_mvm_find_free_scan_uid(mvm); | |
1393 | if (uid_idx >= IWL_MVM_MAX_SIMULTANEOUS_SCANS) | |
1394 | return -EBUSY; | |
1395 | ||
1396 | /* we should have failed registration if scan_cmd was NULL */ | |
1397 | if (WARN_ON(mvm->scan_cmd == NULL)) | |
1398 | return -ENOMEM; | |
1399 | ||
1400 | if (WARN_ON(req->n_ssids > PROBE_OPTION_MAX || | |
1401 | ies->common_ie_len + ies->len[NL80211_BAND_2GHZ] + | |
1402 | ies->len[NL80211_BAND_5GHZ] + 24 + 2 > | |
1403 | SCAN_OFFLOAD_PROBE_REQ_SIZE || req->n_channels > | |
1404 | mvm->fw->ucode_capa.n_scan_channels)) | |
1405 | return -ENOBUFS; | |
1406 | ||
1407 | iwl_mvm_scan_calc_params(mvm, vif, req->n_ssids, req->flags, | |
1408 | ¶ms); | |
1409 | ||
1410 | iwl_mvm_build_generic_umac_scan_cmd(mvm, cmd, ¶ms); | |
1411 | ||
1412 | cmd->flags = cpu_to_le32(IWL_UMAC_SCAN_FLAG_PREEMPTIVE); | |
1413 | ||
1414 | uid = iwl_generate_scan_uid(mvm, IWL_UMAC_SCAN_UID_SCHED_SCAN); | |
1415 | mvm->scan_uid[uid_idx] = uid; | |
1416 | cmd->uid = cpu_to_le32(uid); | |
1417 | ||
1418 | cmd->ooc_priority = cpu_to_le32(IWL_SCAN_PRIORITY_LOW); | |
1419 | ||
1420 | flags = iwl_mvm_scan_umac_common_flags(mvm, req->n_ssids, req->ssids, | |
1421 | params.passive_fragmented); | |
1422 | ||
1423 | flags |= IWL_UMAC_SCAN_GEN_FLAGS_PERIODIC; | |
1424 | ||
1425 | if (iwl_mvm_scan_pass_all(mvm, req)) | |
1426 | flags |= IWL_UMAC_SCAN_GEN_FLAGS_PASS_ALL; | |
1427 | else | |
1428 | flags |= IWL_UMAC_SCAN_GEN_FLAGS_MATCH; | |
1429 | ||
1430 | cmd->general_flags = cpu_to_le32(flags); | |
1431 | ||
1432 | if (mvm->fw->ucode_capa.flags & IWL_UCODE_TLV_FLAGS_EBS_SUPPORT && | |
1433 | mvm->last_ebs_successful) | |
1434 | cmd->channel_flags = IWL_SCAN_CHANNEL_FLAG_EBS | | |
1435 | IWL_SCAN_CHANNEL_FLAG_EBS_ACCURATE | | |
1436 | IWL_SCAN_CHANNEL_FLAG_CACHE_ADD; | |
1437 | ||
1438 | cmd->n_channels = req->n_channels; | |
1439 | ||
1440 | iwl_scan_offload_build_ssid(req, sec_part->direct_scan, &ssid_bitmap, | |
1441 | false); | |
1442 | ||
1443 | /* This API uses bits 0-19 instead of 1-20. */ | |
1444 | ssid_bitmap = ssid_bitmap >> 1; | |
1445 | ||
1446 | iwl_mvm_umac_scan_cfg_channels(mvm, req->channels, req->n_channels, | |
1447 | ssid_bitmap, cmd); | |
1448 | ||
1449 | sec_part->schedule[0].interval = | |
1450 | cpu_to_le16(req->interval / MSEC_PER_SEC); | |
1451 | sec_part->schedule[0].iter_count = 0xff; | |
1452 | ||
2250fd94 LC |
1453 | if (req->delay > U16_MAX) { |
1454 | IWL_DEBUG_SCAN(mvm, | |
1455 | "delay value is > 16-bits, set to max possible\n"); | |
1456 | sec_part->delay = cpu_to_le16(U16_MAX); | |
1457 | } else { | |
1458 | sec_part->delay = cpu_to_le16(req->delay); | |
1459 | } | |
d2496221 | 1460 | |
effd05ac JB |
1461 | iwl_mvm_build_unified_scan_probe(mvm, vif, ies, &sec_part->preq, |
1462 | req->flags & NL80211_SCAN_FLAG_RANDOM_ADDR ? | |
1463 | req->mac_addr : NULL, | |
1464 | req->mac_addr_mask); | |
d2496221 DS |
1465 | |
1466 | ret = iwl_mvm_send_cmd(mvm, &hcmd); | |
1467 | if (!ret) { | |
1468 | IWL_DEBUG_SCAN(mvm, | |
1469 | "Sched scan request was sent successfully\n"); | |
1470 | } else { | |
1471 | /* | |
1472 | * If the scan failed, it usually means that the FW was unable | |
1473 | * to allocate the time events. Warn on it, but maybe we | |
1474 | * should try to send the command again with different params. | |
1475 | */ | |
1476 | IWL_ERR(mvm, "Sched scan failed! ret %d\n", ret); | |
1477 | } | |
1478 | return ret; | |
1479 | } | |
1480 | ||
1481 | int iwl_mvm_rx_umac_scan_complete_notif(struct iwl_mvm *mvm, | |
1482 | struct iwl_rx_cmd_buffer *rxb, | |
1483 | struct iwl_device_cmd *cmd) | |
1484 | { | |
1485 | struct iwl_rx_packet *pkt = rxb_addr(rxb); | |
1486 | struct iwl_umac_scan_complete *notif = (void *)pkt->data; | |
1487 | u32 uid = __le32_to_cpu(notif->uid); | |
1488 | bool sched = !!(uid & IWL_UMAC_SCAN_UID_SCHED_SCAN); | |
1489 | int uid_idx = iwl_mvm_find_scan_uid(mvm, uid); | |
1490 | ||
2992a324 DS |
1491 | /* |
1492 | * Scan uid may be set to zero in case of scan abort request from above. | |
1493 | */ | |
1494 | if (uid_idx >= IWL_MVM_MAX_SIMULTANEOUS_SCANS) | |
d2496221 DS |
1495 | return 0; |
1496 | ||
1497 | IWL_DEBUG_SCAN(mvm, | |
1498 | "Scan completed, uid %u type %s, status %s, EBS status %s\n", | |
1499 | uid, sched ? "sched" : "regular", | |
1500 | notif->status == IWL_SCAN_OFFLOAD_COMPLETED ? | |
1501 | "completed" : "aborted", | |
1502 | notif->ebs_status == IWL_SCAN_EBS_SUCCESS ? | |
1503 | "success" : "failed"); | |
1504 | ||
5a4b2afa HD |
1505 | if (notif->ebs_status) |
1506 | mvm->last_ebs_successful = false; | |
1507 | ||
d2496221 DS |
1508 | mvm->scan_uid[uid_idx] = 0; |
1509 | ||
1510 | if (!sched) { | |
1511 | ieee80211_scan_completed(mvm->hw, | |
1512 | notif->status == | |
1513 | IWL_SCAN_OFFLOAD_ABORTED); | |
1514 | iwl_mvm_unref(mvm, IWL_MVM_REF_SCAN); | |
1515 | } else if (!iwl_mvm_find_scan_type(mvm, IWL_UMAC_SCAN_UID_SCHED_SCAN)) { | |
1516 | ieee80211_sched_scan_stopped(mvm->hw); | |
1517 | } else { | |
1518 | IWL_DEBUG_SCAN(mvm, "Another sched scan is running\n"); | |
1519 | } | |
1520 | ||
1521 | return 0; | |
1522 | } | |
1523 | ||
1524 | static bool iwl_scan_umac_done_check(struct iwl_notif_wait_data *notif_wait, | |
1525 | struct iwl_rx_packet *pkt, void *data) | |
1526 | { | |
1527 | struct iwl_umac_scan_done *scan_done = data; | |
1528 | struct iwl_umac_scan_complete *notif = (void *)pkt->data; | |
1529 | u32 uid = __le32_to_cpu(notif->uid); | |
1530 | int uid_idx = iwl_mvm_find_scan_uid(scan_done->mvm, uid); | |
1531 | ||
1532 | if (WARN_ON(pkt->hdr.cmd != SCAN_COMPLETE_UMAC)) | |
1533 | return false; | |
1534 | ||
1535 | if (uid_idx >= IWL_MVM_MAX_SIMULTANEOUS_SCANS) | |
1536 | return false; | |
1537 | ||
1538 | /* | |
1539 | * Clear scan uid of scans that was aborted from above and completed | |
5a4b2afa HD |
1540 | * in FW so the RX handler does nothing. Set last_ebs_successful here if |
1541 | * needed. | |
d2496221 DS |
1542 | */ |
1543 | scan_done->mvm->scan_uid[uid_idx] = 0; | |
1544 | ||
5a4b2afa HD |
1545 | if (notif->ebs_status) |
1546 | scan_done->mvm->last_ebs_successful = false; | |
1547 | ||
d2496221 DS |
1548 | return !iwl_mvm_find_scan_type(scan_done->mvm, scan_done->type); |
1549 | } | |
1550 | ||
1551 | static int iwl_umac_scan_abort_one(struct iwl_mvm *mvm, u32 uid) | |
1552 | { | |
1553 | struct iwl_umac_scan_abort cmd = { | |
1554 | .hdr.size = cpu_to_le16(sizeof(struct iwl_umac_scan_abort) - | |
1555 | sizeof(struct iwl_mvm_umac_cmd_hdr)), | |
1556 | .uid = cpu_to_le32(uid), | |
1557 | }; | |
1558 | ||
1559 | lockdep_assert_held(&mvm->mutex); | |
1560 | ||
1561 | IWL_DEBUG_SCAN(mvm, "Sending scan abort, uid %u\n", uid); | |
1562 | ||
1563 | return iwl_mvm_send_cmd_pdu(mvm, SCAN_ABORT_UMAC, 0, sizeof(cmd), &cmd); | |
1564 | } | |
1565 | ||
1566 | static int iwl_umac_scan_stop(struct iwl_mvm *mvm, | |
1567 | enum iwl_umac_scan_uid_type type, bool notify) | |
1568 | { | |
1569 | struct iwl_notification_wait wait_scan_done; | |
1570 | static const u8 scan_done_notif[] = { SCAN_COMPLETE_UMAC, }; | |
1571 | struct iwl_umac_scan_done scan_done = { | |
1572 | .mvm = mvm, | |
1573 | .type = type, | |
1574 | }; | |
1575 | int i, ret = -EIO; | |
1576 | ||
1577 | iwl_init_notification_wait(&mvm->notif_wait, &wait_scan_done, | |
1578 | scan_done_notif, | |
1579 | ARRAY_SIZE(scan_done_notif), | |
1580 | iwl_scan_umac_done_check, &scan_done); | |
1581 | ||
1582 | IWL_DEBUG_SCAN(mvm, "Preparing to stop scan, type %x\n", type); | |
1583 | ||
1584 | for (i = 0; i < IWL_MVM_MAX_SIMULTANEOUS_SCANS; i++) { | |
1585 | if (mvm->scan_uid[i] & type) { | |
1586 | int err; | |
1587 | ||
1588 | if (iwl_mvm_is_radio_killed(mvm) && | |
1589 | (type & IWL_UMAC_SCAN_UID_REG_SCAN)) { | |
1590 | ieee80211_scan_completed(mvm->hw, true); | |
1591 | iwl_mvm_unref(mvm, IWL_MVM_REF_SCAN); | |
1592 | break; | |
1593 | } | |
1594 | ||
1595 | err = iwl_umac_scan_abort_one(mvm, mvm->scan_uid[i]); | |
1596 | if (!err) | |
1597 | ret = 0; | |
1598 | } | |
1599 | } | |
1600 | ||
1601 | if (ret) { | |
1602 | IWL_DEBUG_SCAN(mvm, "Couldn't stop scan\n"); | |
1603 | iwl_remove_notification(&mvm->notif_wait, &wait_scan_done); | |
1604 | return ret; | |
1605 | } | |
1606 | ||
1607 | ret = iwl_wait_notification(&mvm->notif_wait, &wait_scan_done, 1 * HZ); | |
1608 | if (ret) | |
1609 | return ret; | |
1610 | ||
1611 | if (notify) { | |
1612 | if (type & IWL_UMAC_SCAN_UID_SCHED_SCAN) | |
1613 | ieee80211_sched_scan_stopped(mvm->hw); | |
1614 | if (type & IWL_UMAC_SCAN_UID_REG_SCAN) { | |
1615 | ieee80211_scan_completed(mvm->hw, true); | |
1616 | iwl_mvm_unref(mvm, IWL_MVM_REF_SCAN); | |
1617 | } | |
1618 | } | |
1619 | ||
1620 | return ret; | |
1621 | } | |
1622 | ||
1623 | int iwl_mvm_scan_size(struct iwl_mvm *mvm) | |
1624 | { | |
1625 | if (mvm->fw->ucode_capa.capa[0] & IWL_UCODE_TLV_CAPA_UMAC_SCAN) | |
1626 | return sizeof(struct iwl_scan_req_umac) + | |
1627 | sizeof(struct iwl_scan_channel_cfg_umac) * | |
1628 | mvm->fw->ucode_capa.n_scan_channels + | |
1629 | sizeof(struct iwl_scan_req_umac_tail); | |
1630 | ||
1f940386 LC |
1631 | return sizeof(struct iwl_scan_req_unified_lmac) + |
1632 | sizeof(struct iwl_scan_channel_cfg_lmac) * | |
1633 | mvm->fw->ucode_capa.n_scan_channels + | |
1634 | sizeof(struct iwl_scan_probe_req); | |
d2496221 | 1635 | } |
4ffb3650 DS |
1636 | |
1637 | /* | |
1638 | * This function is used in nic restart flow, to inform mac80211 about scans | |
1639 | * that was aborted by restart flow or by an assert. | |
1640 | */ | |
1641 | void iwl_mvm_report_scan_aborted(struct iwl_mvm *mvm) | |
1642 | { | |
1643 | if (mvm->fw->ucode_capa.capa[0] & IWL_UCODE_TLV_CAPA_UMAC_SCAN) { | |
963221be AB |
1644 | u32 uid, i; |
1645 | ||
1646 | uid = iwl_mvm_find_first_scan(mvm, IWL_UMAC_SCAN_UID_REG_SCAN); | |
1647 | if (uid < IWL_MVM_MAX_SIMULTANEOUS_SCANS) { | |
4ffb3650 | 1648 | ieee80211_scan_completed(mvm->hw, true); |
963221be AB |
1649 | mvm->scan_uid[uid] = 0; |
1650 | } | |
1651 | uid = iwl_mvm_find_first_scan(mvm, | |
1652 | IWL_UMAC_SCAN_UID_SCHED_SCAN); | |
1653 | if (uid < IWL_MVM_MAX_SIMULTANEOUS_SCANS && !mvm->restart_fw) { | |
4ffb3650 | 1654 | ieee80211_sched_scan_stopped(mvm->hw); |
963221be AB |
1655 | mvm->scan_uid[uid] = 0; |
1656 | } | |
1657 | ||
1658 | /* We shouldn't have any UIDs still set. Loop over all the | |
1659 | * UIDs to make sure there's nothing left there and warn if | |
1660 | * any is found. | |
1661 | */ | |
1662 | for (i = 0; i < IWL_MVM_MAX_SIMULTANEOUS_SCANS; i++) { | |
1663 | if (WARN_ONCE(mvm->scan_uid[i], | |
1664 | "UMAC scan UID %d was not cleaned\n", | |
1665 | mvm->scan_uid[i])) | |
1666 | mvm->scan_uid[i] = 0; | |
1667 | } | |
4ffb3650 DS |
1668 | } else { |
1669 | switch (mvm->scan_status) { | |
1670 | case IWL_MVM_SCAN_NONE: | |
1671 | break; | |
1672 | case IWL_MVM_SCAN_OS: | |
1673 | ieee80211_scan_completed(mvm->hw, true); | |
1674 | break; | |
1675 | case IWL_MVM_SCAN_SCHED: | |
1676 | /* | |
1677 | * Sched scan will be restarted by mac80211 in | |
1678 | * restart_hw, so do not report if FW is about to be | |
1679 | * restarted. | |
1680 | */ | |
1681 | if (!mvm->restart_fw) | |
1682 | ieee80211_sched_scan_stopped(mvm->hw); | |
1683 | break; | |
1684 | } | |
1685 | } | |
1686 | } |