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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 | |
8a110d9b AB |
75 | |
76 | struct iwl_mvm_scan_params { | |
77 | u32 max_out_time; | |
78 | u32 suspend_time; | |
50df8a30 AB |
79 | bool passive_fragmented; |
80 | struct _dwell { | |
81 | u16 passive; | |
82 | u16 active; | |
83 | } dwell[IEEE80211_NUM_BANDS]; | |
8a110d9b | 84 | }; |
8ca151b5 JB |
85 | |
86 | static inline __le16 iwl_mvm_scan_rx_chain(struct iwl_mvm *mvm) | |
87 | { | |
88 | u16 rx_chain; | |
91b05d10 | 89 | u8 rx_ant; |
8ca151b5 | 90 | |
91b05d10 OG |
91 | if (mvm->scan_rx_ant != ANT_NONE) |
92 | rx_ant = mvm->scan_rx_ant; | |
93 | else | |
4ed735e7 | 94 | rx_ant = mvm->fw->valid_rx_ant; |
8ca151b5 JB |
95 | rx_chain = rx_ant << PHY_RX_CHAIN_VALID_POS; |
96 | rx_chain |= rx_ant << PHY_RX_CHAIN_FORCE_MIMO_SEL_POS; | |
97 | rx_chain |= rx_ant << PHY_RX_CHAIN_FORCE_SEL_POS; | |
98 | rx_chain |= 0x1 << PHY_RX_CHAIN_DRIVER_FORCE_POS; | |
99 | return cpu_to_le16(rx_chain); | |
100 | } | |
101 | ||
fb98be5e | 102 | static __le32 iwl_mvm_scan_rxon_flags(enum ieee80211_band band) |
8ca151b5 | 103 | { |
fb98be5e | 104 | if (band == IEEE80211_BAND_2GHZ) |
8ca151b5 JB |
105 | return cpu_to_le32(PHY_BAND_24); |
106 | else | |
107 | return cpu_to_le32(PHY_BAND_5); | |
108 | } | |
109 | ||
110 | static inline __le32 | |
111 | iwl_mvm_scan_rate_n_flags(struct iwl_mvm *mvm, enum ieee80211_band band, | |
112 | bool no_cck) | |
113 | { | |
114 | u32 tx_ant; | |
115 | ||
116 | mvm->scan_last_antenna_idx = | |
4ed735e7 | 117 | iwl_mvm_next_antenna(mvm, mvm->fw->valid_tx_ant, |
8ca151b5 JB |
118 | mvm->scan_last_antenna_idx); |
119 | tx_ant = BIT(mvm->scan_last_antenna_idx) << RATE_MCS_ANT_POS; | |
120 | ||
121 | if (band == IEEE80211_BAND_2GHZ && !no_cck) | |
122 | return cpu_to_le32(IWL_RATE_1M_PLCP | RATE_MCS_CCK_MSK | | |
123 | tx_ant); | |
124 | else | |
125 | return cpu_to_le32(IWL_RATE_6M_PLCP | tx_ant); | |
126 | } | |
127 | ||
128 | /* | |
129 | * We insert the SSIDs in an inverted order, because the FW will | |
130 | * invert it back. The most prioritized SSID, which is first in the | |
131 | * request list, is not copied here, but inserted directly to the probe | |
132 | * request. | |
133 | */ | |
fb98be5e DS |
134 | static void iwl_mvm_scan_fill_ssids(struct iwl_ssid_ie *cmd_ssid, |
135 | struct cfg80211_ssid *ssids, | |
136 | int n_ssids, int first) | |
8ca151b5 JB |
137 | { |
138 | int fw_idx, req_idx; | |
139 | ||
fb98be5e | 140 | for (req_idx = n_ssids - 1, fw_idx = 0; req_idx >= first; |
fe04e837 | 141 | req_idx--, fw_idx++) { |
fb98be5e DS |
142 | cmd_ssid[fw_idx].id = WLAN_EID_SSID; |
143 | cmd_ssid[fw_idx].len = ssids[req_idx].ssid_len; | |
144 | memcpy(cmd_ssid[fw_idx].ssid, | |
145 | ssids[req_idx].ssid, | |
146 | ssids[req_idx].ssid_len); | |
8ca151b5 JB |
147 | } |
148 | } | |
149 | ||
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 JB |
159 | */ |
160 | static u16 iwl_mvm_get_active_dwell(enum ieee80211_band band, int n_ssids) | |
161 | { | |
162 | if (band == IEEE80211_BAND_2GHZ) | |
39745337 DS |
163 | return 20 + 3 * (n_ssids + 1); |
164 | return 10 + 2 * (n_ssids + 1); | |
8ca151b5 JB |
165 | } |
166 | ||
167 | static u16 iwl_mvm_get_passive_dwell(enum ieee80211_band band) | |
168 | { | |
169 | return band == IEEE80211_BAND_2GHZ ? 100 + 20 : 100 + 10; | |
170 | } | |
171 | ||
172 | static void iwl_mvm_scan_fill_channels(struct iwl_scan_cmd *cmd, | |
20f1a5de | 173 | struct cfg80211_scan_request *req, |
50df8a30 AB |
174 | bool basic_ssid, |
175 | struct iwl_mvm_scan_params *params) | |
8ca151b5 | 176 | { |
8ca151b5 JB |
177 | struct iwl_scan_channel *chan = (struct iwl_scan_channel *) |
178 | (cmd->data + le16_to_cpu(cmd->tx_cmd.len)); | |
179 | int i; | |
20f1a5de | 180 | int type = BIT(req->n_ssids) - 1; |
50df8a30 | 181 | enum ieee80211_band band = req->channels[0]->band; |
20f1a5de DS |
182 | |
183 | if (!basic_ssid) | |
184 | type |= BIT(req->n_ssids); | |
8ca151b5 JB |
185 | |
186 | for (i = 0; i < cmd->channel_count; i++) { | |
187 | chan->channel = cpu_to_le16(req->channels[i]->hw_value); | |
20f1a5de | 188 | chan->type = cpu_to_le32(type); |
8fe02e16 | 189 | if (req->channels[i]->flags & IEEE80211_CHAN_NO_IR) |
bb963c4a | 190 | chan->type &= cpu_to_le32(~SCAN_CHANNEL_TYPE_ACTIVE); |
50df8a30 AB |
191 | chan->active_dwell = cpu_to_le16(params->dwell[band].active); |
192 | chan->passive_dwell = cpu_to_le16(params->dwell[band].passive); | |
8ca151b5 JB |
193 | chan->iteration_count = cpu_to_le16(1); |
194 | chan++; | |
195 | } | |
196 | } | |
197 | ||
198 | /* | |
199 | * Fill in probe request with the following parameters: | |
200 | * TA is our vif HW address, which mac80211 ensures we have. | |
201 | * Packet is broadcasted, so this is both SA and DA. | |
202 | * The probe request IE is made out of two: first comes the most prioritized | |
203 | * SSID if a directed scan is requested. Second comes whatever extra | |
204 | * information was given to us as the scan request IE. | |
205 | */ | |
206 | static u16 iwl_mvm_fill_probe_req(struct ieee80211_mgmt *frame, const u8 *ta, | |
207 | int n_ssids, const u8 *ssid, int ssid_len, | |
633e2713 DS |
208 | const u8 *band_ie, int band_ie_len, |
209 | const u8 *common_ie, int common_ie_len, | |
8ca151b5 JB |
210 | int left) |
211 | { | |
212 | int len = 0; | |
213 | u8 *pos = NULL; | |
214 | ||
215 | /* Make sure there is enough space for the probe request, | |
216 | * two mandatory IEs and the data */ | |
217 | left -= 24; | |
218 | if (left < 0) | |
219 | return 0; | |
220 | ||
221 | frame->frame_control = cpu_to_le16(IEEE80211_STYPE_PROBE_REQ); | |
222 | eth_broadcast_addr(frame->da); | |
223 | memcpy(frame->sa, ta, ETH_ALEN); | |
224 | eth_broadcast_addr(frame->bssid); | |
225 | frame->seq_ctrl = 0; | |
226 | ||
227 | len += 24; | |
228 | ||
229 | /* for passive scans, no need to fill anything */ | |
230 | if (n_ssids == 0) | |
231 | return (u16)len; | |
232 | ||
233 | /* points to the payload of the request */ | |
234 | pos = &frame->u.probe_req.variable[0]; | |
235 | ||
236 | /* fill in our SSID IE */ | |
237 | left -= ssid_len + 2; | |
238 | if (left < 0) | |
239 | return 0; | |
240 | *pos++ = WLAN_EID_SSID; | |
241 | *pos++ = ssid_len; | |
242 | if (ssid && ssid_len) { /* ssid_len may be == 0 even if ssid is valid */ | |
243 | memcpy(pos, ssid, ssid_len); | |
244 | pos += ssid_len; | |
245 | } | |
246 | ||
247 | len += ssid_len + 2; | |
248 | ||
633e2713 | 249 | if (WARN_ON(left < band_ie_len + common_ie_len)) |
8ca151b5 JB |
250 | return len; |
251 | ||
633e2713 DS |
252 | if (band_ie && band_ie_len) { |
253 | memcpy(pos, band_ie, band_ie_len); | |
254 | pos += band_ie_len; | |
255 | len += band_ie_len; | |
256 | } | |
257 | ||
258 | if (common_ie && common_ie_len) { | |
259 | memcpy(pos, common_ie, common_ie_len); | |
260 | pos += common_ie_len; | |
261 | len += common_ie_len; | |
8ca151b5 JB |
262 | } |
263 | ||
264 | return (u16)len; | |
265 | } | |
266 | ||
8a110d9b AB |
267 | static void iwl_mvm_scan_condition_iterator(void *data, u8 *mac, |
268 | struct ieee80211_vif *vif) | |
61f6325d | 269 | { |
8a110d9b AB |
270 | struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif); |
271 | bool *global_bound = data; | |
61f6325d | 272 | |
8a110d9b AB |
273 | if (mvmvif->phy_ctxt && mvmvif->phy_ctxt->id < MAX_PHYS) |
274 | *global_bound = true; | |
275 | } | |
276 | ||
277 | static void iwl_mvm_scan_calc_params(struct iwl_mvm *mvm, | |
50df8a30 | 278 | struct ieee80211_vif *vif, |
ab480030 | 279 | int n_ssids, u32 flags, |
8a110d9b AB |
280 | struct iwl_mvm_scan_params *params) |
281 | { | |
282 | bool global_bound = false; | |
50df8a30 | 283 | enum ieee80211_band band; |
2ce89cd6 | 284 | u8 frag_passive_dwell = 0; |
8a110d9b AB |
285 | |
286 | ieee80211_iterate_active_interfaces_atomic(mvm->hw, | |
287 | IEEE80211_IFACE_ITER_NORMAL, | |
288 | iwl_mvm_scan_condition_iterator, | |
289 | &global_bound); | |
ef67f18d AB |
290 | |
291 | if (!global_bound) | |
292 | goto not_bound; | |
293 | ||
2ce89cd6 DS |
294 | params->suspend_time = 30; |
295 | params->max_out_time = 170; | |
ef67f18d AB |
296 | |
297 | if (iwl_mvm_low_latency(mvm)) { | |
2ce89cd6 DS |
298 | if (mvm->fw->ucode_capa.api[0] & |
299 | IWL_UCODE_TLV_API_FRAGMENTED_SCAN) { | |
300 | params->suspend_time = 105; | |
301 | params->max_out_time = 70; | |
302 | frag_passive_dwell = 20; | |
303 | } else { | |
304 | params->suspend_time = 120; | |
305 | params->max_out_time = 120; | |
306 | } | |
307 | } | |
308 | ||
309 | if (frag_passive_dwell && (mvm->fw->ucode_capa.api[0] & | |
310 | IWL_UCODE_TLV_API_FRAGMENTED_SCAN)) { | |
311 | /* | |
312 | * P2P device scan should not be fragmented to avoid negative | |
313 | * impact on P2P device discovery. Configure max_out_time to be | |
314 | * equal to dwell time on passive channel. Take a longest | |
315 | * possible value, one that corresponds to 2GHz band | |
316 | */ | |
317 | if (vif->type == NL80211_IFTYPE_P2P_DEVICE) { | |
318 | u32 passive_dwell = | |
319 | iwl_mvm_get_passive_dwell(IEEE80211_BAND_2GHZ); | |
320 | params->max_out_time = passive_dwell; | |
321 | } else { | |
322 | params->passive_fragmented = true; | |
323 | } | |
50df8a30 | 324 | } |
8a110d9b | 325 | |
ab480030 JB |
326 | if (flags & NL80211_SCAN_FLAG_LOW_PRIORITY) |
327 | params->max_out_time = 200; | |
328 | ||
ef67f18d AB |
329 | not_bound: |
330 | ||
50df8a30 | 331 | for (band = IEEE80211_BAND_2GHZ; band < IEEE80211_NUM_BANDS; band++) { |
2ce89cd6 DS |
332 | if (params->passive_fragmented) |
333 | params->dwell[band].passive = frag_passive_dwell; | |
334 | else | |
335 | params->dwell[band].passive = | |
336 | iwl_mvm_get_passive_dwell(band); | |
50df8a30 AB |
337 | params->dwell[band].active = iwl_mvm_get_active_dwell(band, |
338 | n_ssids); | |
339 | } | |
61f6325d HD |
340 | } |
341 | ||
73897bd1 AO |
342 | static inline bool iwl_mvm_rrm_scan_needed(struct iwl_mvm *mvm) |
343 | { | |
344 | /* require rrm scan whenever the fw supports it */ | |
345 | return mvm->fw->ucode_capa.capa[0] & | |
346 | IWL_UCODE_TLV_CAPA_DS_PARAM_SET_IE_SUPPORT; | |
347 | } | |
348 | ||
8ca151b5 JB |
349 | int iwl_mvm_scan_request(struct iwl_mvm *mvm, |
350 | struct ieee80211_vif *vif, | |
351 | struct cfg80211_scan_request *req) | |
352 | { | |
353 | struct iwl_host_cmd hcmd = { | |
354 | .id = SCAN_REQUEST_CMD, | |
355 | .len = { 0, }, | |
356 | .data = { mvm->scan_cmd, }, | |
8ca151b5 JB |
357 | .dataflags = { IWL_HCMD_DFL_NOCOPY, }, |
358 | }; | |
359 | struct iwl_scan_cmd *cmd = mvm->scan_cmd; | |
360 | int ret; | |
361 | u32 status; | |
362 | int ssid_len = 0; | |
363 | u8 *ssid = NULL; | |
20f1a5de DS |
364 | bool basic_ssid = !(mvm->fw->ucode_capa.flags & |
365 | IWL_UCODE_TLV_FLAGS_NO_BASIC_SSID); | |
8a110d9b | 366 | struct iwl_mvm_scan_params params = {}; |
8ca151b5 JB |
367 | |
368 | lockdep_assert_held(&mvm->mutex); | |
748fa67c EG |
369 | |
370 | /* we should have failed registration if scan_cmd was NULL */ | |
371 | if (WARN_ON(mvm->scan_cmd == NULL)) | |
372 | return -ENOMEM; | |
8ca151b5 JB |
373 | |
374 | IWL_DEBUG_SCAN(mvm, "Handling mac80211 scan request\n"); | |
375 | mvm->scan_status = IWL_MVM_SCAN_OS; | |
0564679b | 376 | memset(cmd, 0, ksize(cmd)); |
8a110d9b | 377 | |
8ca151b5 JB |
378 | cmd->channel_count = (u8)req->n_channels; |
379 | cmd->quiet_time = cpu_to_le16(IWL_ACTIVE_QUIET_TIME); | |
380 | cmd->quiet_plcp_th = cpu_to_le16(IWL_PLCP_QUIET_THRESH); | |
381 | cmd->rxchain_sel_flags = iwl_mvm_scan_rx_chain(mvm); | |
8a110d9b | 382 | |
ab480030 | 383 | iwl_mvm_scan_calc_params(mvm, vif, req->n_ssids, req->flags, ¶ms); |
8a110d9b AB |
384 | cmd->max_out_time = cpu_to_le32(params.max_out_time); |
385 | cmd->suspend_time = cpu_to_le32(params.suspend_time); | |
50df8a30 AB |
386 | if (params.passive_fragmented) |
387 | cmd->scan_flags |= SCAN_FLAGS_FRAGMENTED_SCAN; | |
8a110d9b | 388 | |
fb98be5e | 389 | cmd->rxon_flags = iwl_mvm_scan_rxon_flags(req->channels[0]->band); |
8ca151b5 JB |
390 | cmd->filter_flags = cpu_to_le32(MAC_FILTER_ACCEPT_GRP | |
391 | MAC_FILTER_IN_BEACON); | |
d91b06d2 IP |
392 | |
393 | if (vif->type == NL80211_IFTYPE_P2P_DEVICE) | |
394 | cmd->type = cpu_to_le32(SCAN_TYPE_DISCOVERY_FORCED); | |
395 | else | |
396 | cmd->type = cpu_to_le32(SCAN_TYPE_FORCED); | |
397 | ||
8ca151b5 JB |
398 | cmd->repeats = cpu_to_le32(1); |
399 | ||
400 | /* | |
401 | * If the user asked for passive scan, don't change to active scan if | |
402 | * you see any activity on the channel - remain passive. | |
403 | */ | |
404 | if (req->n_ssids > 0) { | |
405 | cmd->passive2active = cpu_to_le16(1); | |
26e05cc3 | 406 | cmd->scan_flags |= SCAN_FLAGS_PASSIVE2ACTIVE; |
20f1a5de DS |
407 | if (basic_ssid) { |
408 | ssid = req->ssids[0].ssid; | |
409 | ssid_len = req->ssids[0].ssid_len; | |
410 | } | |
8ca151b5 JB |
411 | } else { |
412 | cmd->passive2active = 0; | |
26e05cc3 | 413 | cmd->scan_flags &= ~SCAN_FLAGS_PASSIVE2ACTIVE; |
8ca151b5 JB |
414 | } |
415 | ||
fb98be5e DS |
416 | iwl_mvm_scan_fill_ssids(cmd->direct_scan, req->ssids, req->n_ssids, |
417 | basic_ssid ? 1 : 0); | |
8ca151b5 | 418 | |
8e2a866e EG |
419 | cmd->tx_cmd.tx_flags = cpu_to_le32(TX_CMD_FLG_SEQ_CTL | |
420 | TX_CMD_FLG_BT_DIS); | |
8ca151b5 JB |
421 | cmd->tx_cmd.sta_id = mvm->aux_sta.sta_id; |
422 | cmd->tx_cmd.life_time = cpu_to_le32(TX_CMD_LIFE_TIME_INFINITE); | |
423 | cmd->tx_cmd.rate_n_flags = | |
424 | iwl_mvm_scan_rate_n_flags(mvm, req->channels[0]->band, | |
425 | req->no_cck); | |
426 | ||
427 | cmd->tx_cmd.len = | |
428 | cpu_to_le16(iwl_mvm_fill_probe_req( | |
429 | (struct ieee80211_mgmt *)cmd->data, | |
430 | vif->addr, | |
431 | req->n_ssids, ssid, ssid_len, | |
633e2713 | 432 | req->ie, req->ie_len, NULL, 0, |
8ca151b5 JB |
433 | mvm->fw->ucode_capa.max_probe_length)); |
434 | ||
50df8a30 | 435 | iwl_mvm_scan_fill_channels(cmd, req, basic_ssid, ¶ms); |
8ca151b5 JB |
436 | |
437 | cmd->len = cpu_to_le16(sizeof(struct iwl_scan_cmd) + | |
438 | le16_to_cpu(cmd->tx_cmd.len) + | |
439 | (cmd->channel_count * sizeof(struct iwl_scan_channel))); | |
440 | hcmd.len[0] = le16_to_cpu(cmd->len); | |
441 | ||
442 | status = SCAN_RESPONSE_OK; | |
443 | ret = iwl_mvm_send_cmd_status(mvm, &hcmd, &status); | |
444 | if (!ret && status == SCAN_RESPONSE_OK) { | |
445 | IWL_DEBUG_SCAN(mvm, "Scan request was sent successfully\n"); | |
446 | } else { | |
447 | /* | |
448 | * If the scan failed, it usually means that the FW was unable | |
449 | * to allocate the time events. Warn on it, but maybe we | |
450 | * should try to send the command again with different params. | |
451 | */ | |
452 | IWL_ERR(mvm, "Scan failed! status 0x%x ret %d\n", | |
453 | status, ret); | |
454 | mvm->scan_status = IWL_MVM_SCAN_NONE; | |
455 | ret = -EIO; | |
456 | } | |
457 | return ret; | |
458 | } | |
459 | ||
460 | int iwl_mvm_rx_scan_response(struct iwl_mvm *mvm, struct iwl_rx_cmd_buffer *rxb, | |
461 | struct iwl_device_cmd *cmd) | |
462 | { | |
463 | struct iwl_rx_packet *pkt = rxb_addr(rxb); | |
464 | struct iwl_cmd_response *resp = (void *)pkt->data; | |
465 | ||
466 | IWL_DEBUG_SCAN(mvm, "Scan response received. status 0x%x\n", | |
467 | le32_to_cpu(resp->status)); | |
468 | return 0; | |
469 | } | |
470 | ||
471 | int iwl_mvm_rx_scan_complete(struct iwl_mvm *mvm, struct iwl_rx_cmd_buffer *rxb, | |
472 | struct iwl_device_cmd *cmd) | |
473 | { | |
474 | struct iwl_rx_packet *pkt = rxb_addr(rxb); | |
475 | struct iwl_scan_complete_notif *notif = (void *)pkt->data; | |
476 | ||
91b80256 AN |
477 | lockdep_assert_held(&mvm->mutex); |
478 | ||
8ca151b5 JB |
479 | IWL_DEBUG_SCAN(mvm, "Scan complete: status=0x%x scanned channels=%d\n", |
480 | notif->status, notif->scanned_channels); | |
481 | ||
91b80256 AN |
482 | if (mvm->scan_status == IWL_MVM_SCAN_OS) |
483 | mvm->scan_status = IWL_MVM_SCAN_NONE; | |
8ca151b5 JB |
484 | ieee80211_scan_completed(mvm->hw, notif->status != SCAN_COMP_STATUS_OK); |
485 | ||
519e2026 AN |
486 | iwl_mvm_unref(mvm, IWL_MVM_REF_SCAN); |
487 | ||
8ca151b5 JB |
488 | return 0; |
489 | } | |
490 | ||
fb98be5e DS |
491 | int iwl_mvm_rx_scan_offload_results(struct iwl_mvm *mvm, |
492 | struct iwl_rx_cmd_buffer *rxb, | |
493 | struct iwl_device_cmd *cmd) | |
35a000b7 DS |
494 | { |
495 | struct iwl_rx_packet *pkt = rxb_addr(rxb); | |
fb98be5e DS |
496 | u8 client_bitmap = 0; |
497 | ||
498 | if (!(mvm->fw->ucode_capa.api[0] & IWL_UCODE_TLV_API_LMAC_SCAN)) { | |
499 | struct iwl_sched_scan_results *notif = (void *)pkt->data; | |
35a000b7 | 500 | |
fb98be5e DS |
501 | client_bitmap = notif->client_bitmap; |
502 | } | |
503 | ||
504 | if (mvm->fw->ucode_capa.api[0] & IWL_UCODE_TLV_API_LMAC_SCAN || | |
505 | client_bitmap & SCAN_CLIENT_SCHED_SCAN) { | |
506 | if (mvm->scan_status == IWL_MVM_SCAN_SCHED) { | |
507 | IWL_DEBUG_SCAN(mvm, "Scheduled scan results\n"); | |
508 | ieee80211_sched_scan_results(mvm->hw); | |
509 | } else { | |
510 | IWL_DEBUG_SCAN(mvm, "Scan results\n"); | |
511 | } | |
35a000b7 DS |
512 | } |
513 | ||
514 | return 0; | |
515 | } | |
516 | ||
8ca151b5 JB |
517 | static bool iwl_mvm_scan_abort_notif(struct iwl_notif_wait_data *notif_wait, |
518 | struct iwl_rx_packet *pkt, void *data) | |
519 | { | |
520 | struct iwl_mvm *mvm = | |
521 | container_of(notif_wait, struct iwl_mvm, notif_wait); | |
522 | struct iwl_scan_complete_notif *notif; | |
523 | u32 *resp; | |
524 | ||
525 | switch (pkt->hdr.cmd) { | |
526 | case SCAN_ABORT_CMD: | |
527 | resp = (void *)pkt->data; | |
528 | if (*resp == CAN_ABORT_STATUS) { | |
529 | IWL_DEBUG_SCAN(mvm, | |
530 | "Scan can be aborted, wait until completion\n"); | |
531 | return false; | |
532 | } | |
533 | ||
5a3e9f7f EG |
534 | /* |
535 | * If scan cannot be aborted, it means that we had a | |
536 | * SCAN_COMPLETE_NOTIFICATION in the pipe and it called | |
537 | * ieee80211_scan_completed already. | |
538 | */ | |
8ca151b5 JB |
539 | IWL_DEBUG_SCAN(mvm, "Scan cannot be aborted, exit now: %d\n", |
540 | *resp); | |
541 | return true; | |
542 | ||
543 | case SCAN_COMPLETE_NOTIFICATION: | |
544 | notif = (void *)pkt->data; | |
545 | IWL_DEBUG_SCAN(mvm, "Scan aborted: status 0x%x\n", | |
546 | notif->status); | |
547 | return true; | |
548 | ||
549 | default: | |
550 | WARN_ON(1); | |
551 | return false; | |
552 | }; | |
553 | } | |
554 | ||
fb98be5e | 555 | static int iwl_mvm_cancel_regular_scan(struct iwl_mvm *mvm) |
8ca151b5 JB |
556 | { |
557 | struct iwl_notification_wait wait_scan_abort; | |
558 | static const u8 scan_abort_notif[] = { SCAN_ABORT_CMD, | |
559 | SCAN_COMPLETE_NOTIFICATION }; | |
560 | int ret; | |
561 | ||
5a3e9f7f | 562 | if (mvm->scan_status == IWL_MVM_SCAN_NONE) |
91b80256 | 563 | return 0; |
5a3e9f7f | 564 | |
aaa4e741 EG |
565 | if (iwl_mvm_is_radio_killed(mvm)) { |
566 | ieee80211_scan_completed(mvm->hw, true); | |
519e2026 | 567 | iwl_mvm_unref(mvm, IWL_MVM_REF_SCAN); |
aaa4e741 | 568 | mvm->scan_status = IWL_MVM_SCAN_NONE; |
91b80256 | 569 | return 0; |
aaa4e741 EG |
570 | } |
571 | ||
8ca151b5 JB |
572 | iwl_init_notification_wait(&mvm->notif_wait, &wait_scan_abort, |
573 | scan_abort_notif, | |
574 | ARRAY_SIZE(scan_abort_notif), | |
575 | iwl_mvm_scan_abort_notif, NULL); | |
576 | ||
a1022927 | 577 | ret = iwl_mvm_send_cmd_pdu(mvm, SCAN_ABORT_CMD, 0, 0, NULL); |
8ca151b5 JB |
578 | if (ret) { |
579 | IWL_ERR(mvm, "Couldn't send SCAN_ABORT_CMD: %d\n", ret); | |
992f81fc | 580 | /* mac80211's state will be cleaned in the nic_restart flow */ |
8ca151b5 JB |
581 | goto out_remove_notif; |
582 | } | |
583 | ||
91b80256 | 584 | return iwl_wait_notification(&mvm->notif_wait, &wait_scan_abort, HZ); |
8ca151b5 JB |
585 | |
586 | out_remove_notif: | |
587 | iwl_remove_notification(&mvm->notif_wait, &wait_scan_abort); | |
91b80256 | 588 | return ret; |
8ca151b5 | 589 | } |
35a000b7 DS |
590 | |
591 | int iwl_mvm_rx_scan_offload_complete_notif(struct iwl_mvm *mvm, | |
592 | struct iwl_rx_cmd_buffer *rxb, | |
593 | struct iwl_device_cmd *cmd) | |
594 | { | |
595 | struct iwl_rx_packet *pkt = rxb_addr(rxb); | |
fb98be5e DS |
596 | u8 status, ebs_status; |
597 | ||
598 | if (mvm->fw->ucode_capa.api[0] & IWL_UCODE_TLV_API_LMAC_SCAN) { | |
599 | struct iwl_periodic_scan_complete *scan_notif; | |
35a000b7 | 600 | |
fb98be5e DS |
601 | scan_notif = (void *)pkt->data; |
602 | status = scan_notif->status; | |
603 | ebs_status = scan_notif->ebs_status; | |
604 | } else { | |
605 | struct iwl_scan_offload_complete *scan_notif; | |
606 | ||
607 | scan_notif = (void *)pkt->data; | |
608 | status = scan_notif->status; | |
609 | ebs_status = scan_notif->ebs_status; | |
610 | } | |
a6623e84 JB |
611 | /* scan status must be locked for proper checking */ |
612 | lockdep_assert_held(&mvm->mutex); | |
613 | ||
e820c2da | 614 | IWL_DEBUG_SCAN(mvm, |
fb98be5e DS |
615 | "%s completed, status %s, EBS status %s\n", |
616 | mvm->scan_status == IWL_MVM_SCAN_SCHED ? | |
617 | "Scheduled scan" : "Scan", | |
618 | status == IWL_SCAN_OFFLOAD_COMPLETED ? | |
619 | "completed" : "aborted", | |
620 | ebs_status == IWL_SCAN_EBS_SUCCESS ? | |
621 | "success" : "failed"); | |
e820c2da | 622 | |
35a000b7 | 623 | |
33ea27f6 AN |
624 | /* only call mac80211 completion if the stop was initiated by FW */ |
625 | if (mvm->scan_status == IWL_MVM_SCAN_SCHED) { | |
a6623e84 | 626 | mvm->scan_status = IWL_MVM_SCAN_NONE; |
33ea27f6 | 627 | ieee80211_sched_scan_stopped(mvm->hw); |
fb98be5e DS |
628 | } else if (mvm->scan_status == IWL_MVM_SCAN_OS) { |
629 | mvm->scan_status = IWL_MVM_SCAN_NONE; | |
630 | ieee80211_scan_completed(mvm->hw, | |
631 | status == IWL_SCAN_OFFLOAD_ABORTED); | |
33ea27f6 | 632 | } |
35a000b7 | 633 | |
fb98be5e | 634 | mvm->last_ebs_successful = !ebs_status; |
e820c2da | 635 | |
35a000b7 DS |
636 | return 0; |
637 | } | |
638 | ||
639 | static void iwl_scan_offload_build_tx_cmd(struct iwl_mvm *mvm, | |
640 | struct ieee80211_vif *vif, | |
633e2713 | 641 | struct ieee80211_scan_ies *ies, |
35a000b7 DS |
642 | enum ieee80211_band band, |
643 | struct iwl_tx_cmd *cmd, | |
644 | u8 *data) | |
645 | { | |
646 | u16 cmd_len; | |
647 | ||
648 | cmd->tx_flags = cpu_to_le32(TX_CMD_FLG_SEQ_CTL); | |
649 | cmd->life_time = cpu_to_le32(TX_CMD_LIFE_TIME_INFINITE); | |
650 | cmd->sta_id = mvm->aux_sta.sta_id; | |
651 | ||
652 | cmd->rate_n_flags = iwl_mvm_scan_rate_n_flags(mvm, band, false); | |
653 | ||
654 | cmd_len = iwl_mvm_fill_probe_req((struct ieee80211_mgmt *)data, | |
655 | vif->addr, | |
656 | 1, NULL, 0, | |
633e2713 DS |
657 | ies->ies[band], ies->len[band], |
658 | ies->common_ies, ies->common_ie_len, | |
35a000b7 DS |
659 | SCAN_OFFLOAD_PROBE_REQ_SIZE); |
660 | cmd->len = cpu_to_le16(cmd_len); | |
661 | } | |
662 | ||
663 | static void iwl_build_scan_cmd(struct iwl_mvm *mvm, | |
664 | struct ieee80211_vif *vif, | |
665 | struct cfg80211_sched_scan_request *req, | |
50df8a30 AB |
666 | struct iwl_scan_offload_cmd *scan, |
667 | struct iwl_mvm_scan_params *params) | |
35a000b7 | 668 | { |
89879413 | 669 | scan->channel_count = req->n_channels; |
35a000b7 DS |
670 | scan->quiet_time = cpu_to_le16(IWL_ACTIVE_QUIET_TIME); |
671 | scan->quiet_plcp_th = cpu_to_le16(IWL_PLCP_QUIET_THRESH); | |
672 | scan->good_CRC_th = IWL_GOOD_CRC_TH_DEFAULT; | |
673 | scan->rx_chain = iwl_mvm_scan_rx_chain(mvm); | |
8a110d9b | 674 | |
50df8a30 AB |
675 | scan->max_out_time = cpu_to_le32(params->max_out_time); |
676 | scan->suspend_time = cpu_to_le32(params->suspend_time); | |
8a110d9b | 677 | |
35a000b7 DS |
678 | scan->filter_flags |= cpu_to_le32(MAC_FILTER_ACCEPT_GRP | |
679 | MAC_FILTER_IN_BEACON); | |
680 | scan->scan_type = cpu_to_le32(SCAN_TYPE_BACKGROUND); | |
681 | scan->rep_count = cpu_to_le32(1); | |
50df8a30 AB |
682 | |
683 | if (params->passive_fragmented) | |
684 | scan->scan_flags |= SCAN_FLAGS_FRAGMENTED_SCAN; | |
35a000b7 DS |
685 | } |
686 | ||
687 | static int iwl_ssid_exist(u8 *ssid, u8 ssid_len, struct iwl_ssid_ie *ssid_list) | |
688 | { | |
689 | int i; | |
690 | ||
691 | for (i = 0; i < PROBE_OPTION_MAX; i++) { | |
692 | if (!ssid_list[i].len) | |
693 | break; | |
694 | if (ssid_list[i].len == ssid_len && | |
695 | !memcmp(ssid_list->ssid, ssid, ssid_len)) | |
696 | return i; | |
697 | } | |
698 | return -1; | |
699 | } | |
700 | ||
701 | static void iwl_scan_offload_build_ssid(struct cfg80211_sched_scan_request *req, | |
fb98be5e DS |
702 | struct iwl_ssid_ie *direct_scan, |
703 | u32 *ssid_bitmap, bool basic_ssid) | |
35a000b7 DS |
704 | { |
705 | int i, j; | |
706 | int index; | |
707 | ||
708 | /* | |
709 | * copy SSIDs from match list. | |
710 | * iwl_config_sched_scan_profiles() uses the order of these ssids to | |
711 | * config match list. | |
712 | */ | |
713 | for (i = 0; i < req->n_match_sets && i < PROBE_OPTION_MAX; i++) { | |
ea73cbce JB |
714 | /* skip empty SSID matchsets */ |
715 | if (!req->match_sets[i].ssid.ssid_len) | |
716 | continue; | |
fb98be5e DS |
717 | direct_scan[i].id = WLAN_EID_SSID; |
718 | direct_scan[i].len = req->match_sets[i].ssid.ssid_len; | |
719 | memcpy(direct_scan[i].ssid, req->match_sets[i].ssid.ssid, | |
720 | direct_scan[i].len); | |
35a000b7 DS |
721 | } |
722 | ||
723 | /* add SSIDs from scan SSID list */ | |
724 | *ssid_bitmap = 0; | |
725 | for (j = 0; j < req->n_ssids && i < PROBE_OPTION_MAX; j++) { | |
726 | index = iwl_ssid_exist(req->ssids[j].ssid, | |
727 | req->ssids[j].ssid_len, | |
fb98be5e | 728 | direct_scan); |
35a000b7 | 729 | if (index < 0) { |
fb98be5e | 730 | if (!req->ssids[j].ssid_len && basic_ssid) |
35a000b7 | 731 | continue; |
fb98be5e DS |
732 | direct_scan[i].id = WLAN_EID_SSID; |
733 | direct_scan[i].len = req->ssids[j].ssid_len; | |
734 | memcpy(direct_scan[i].ssid, req->ssids[j].ssid, | |
735 | direct_scan[i].len); | |
35a000b7 DS |
736 | *ssid_bitmap |= BIT(i + 1); |
737 | i++; | |
738 | } else { | |
739 | *ssid_bitmap |= BIT(index + 1); | |
740 | } | |
741 | } | |
742 | } | |
743 | ||
744 | static void iwl_build_channel_cfg(struct iwl_mvm *mvm, | |
745 | struct cfg80211_sched_scan_request *req, | |
762533ba | 746 | u8 *channels_buffer, |
35a000b7 | 747 | enum ieee80211_band band, |
89879413 | 748 | int *head, |
50df8a30 AB |
749 | u32 ssid_bitmap, |
750 | struct iwl_mvm_scan_params *params) | |
35a000b7 | 751 | { |
762533ba DS |
752 | u32 n_channels = mvm->fw->ucode_capa.n_scan_channels; |
753 | __le32 *type = (__le32 *)channels_buffer; | |
754 | __le16 *channel_number = (__le16 *)(type + n_channels); | |
755 | __le16 *iter_count = channel_number + n_channels; | |
756 | __le32 *iter_interval = (__le32 *)(iter_count + n_channels); | |
757 | u8 *active_dwell = (u8 *)(iter_interval + n_channels); | |
758 | u8 *passive_dwell = active_dwell + n_channels; | |
89879413 | 759 | int i, index = 0; |
35a000b7 | 760 | |
89879413 EP |
761 | for (i = 0; i < req->n_channels; i++) { |
762 | struct ieee80211_channel *chan = req->channels[i]; | |
763 | ||
764 | if (chan->band != band) | |
765 | continue; | |
35a000b7 | 766 | |
89879413 EP |
767 | index = *head; |
768 | (*head)++; | |
769 | ||
762533ba DS |
770 | channel_number[index] = cpu_to_le16(chan->hw_value); |
771 | active_dwell[index] = params->dwell[band].active; | |
772 | passive_dwell[index] = params->dwell[band].passive; | |
35a000b7 | 773 | |
762533ba DS |
774 | iter_count[index] = cpu_to_le16(1); |
775 | iter_interval[index] = 0; | |
35a000b7 | 776 | |
89879413 | 777 | if (!(chan->flags & IEEE80211_CHAN_NO_IR)) |
762533ba | 778 | type[index] |= |
35a000b7 DS |
779 | cpu_to_le32(IWL_SCAN_OFFLOAD_CHANNEL_ACTIVE); |
780 | ||
762533ba DS |
781 | type[index] |= cpu_to_le32(IWL_SCAN_OFFLOAD_CHANNEL_FULL | |
782 | IWL_SCAN_OFFLOAD_CHANNEL_PARTIAL); | |
35a000b7 | 783 | |
89879413 | 784 | if (chan->flags & IEEE80211_CHAN_NO_HT40) |
762533ba | 785 | type[index] |= |
35a000b7 DS |
786 | cpu_to_le32(IWL_SCAN_OFFLOAD_CHANNEL_NARROW); |
787 | ||
788 | /* scan for all SSIDs from req->ssids */ | |
762533ba | 789 | type[index] |= cpu_to_le32(ssid_bitmap); |
35a000b7 DS |
790 | } |
791 | } | |
792 | ||
793 | int iwl_mvm_config_sched_scan(struct iwl_mvm *mvm, | |
794 | struct ieee80211_vif *vif, | |
795 | struct cfg80211_sched_scan_request *req, | |
633e2713 | 796 | struct ieee80211_scan_ies *ies) |
35a000b7 | 797 | { |
35a000b7 DS |
798 | int band_2ghz = mvm->nvm_data->bands[IEEE80211_BAND_2GHZ].n_channels; |
799 | int band_5ghz = mvm->nvm_data->bands[IEEE80211_BAND_5GHZ].n_channels; | |
800 | int head = 0; | |
35a000b7 DS |
801 | u32 ssid_bitmap; |
802 | int cmd_len; | |
803 | int ret; | |
762533ba | 804 | u8 *probes; |
fb98be5e DS |
805 | bool basic_ssid = !(mvm->fw->ucode_capa.flags & |
806 | IWL_UCODE_TLV_FLAGS_NO_BASIC_SSID); | |
35a000b7 DS |
807 | |
808 | struct iwl_scan_offload_cfg *scan_cfg; | |
809 | struct iwl_host_cmd cmd = { | |
810 | .id = SCAN_OFFLOAD_CONFIG_CMD, | |
35a000b7 | 811 | }; |
50df8a30 | 812 | struct iwl_mvm_scan_params params = {}; |
35a000b7 DS |
813 | |
814 | lockdep_assert_held(&mvm->mutex); | |
815 | ||
35a000b7 | 816 | cmd_len = sizeof(struct iwl_scan_offload_cfg) + |
762533ba | 817 | mvm->fw->ucode_capa.n_scan_channels * IWL_SCAN_CHAN_SIZE + |
66092537 | 818 | 2 * SCAN_OFFLOAD_PROBE_REQ_SIZE; |
35a000b7 DS |
819 | |
820 | scan_cfg = kzalloc(cmd_len, GFP_KERNEL); | |
821 | if (!scan_cfg) | |
822 | return -ENOMEM; | |
823 | ||
762533ba DS |
824 | probes = scan_cfg->data + |
825 | mvm->fw->ucode_capa.n_scan_channels * IWL_SCAN_CHAN_SIZE; | |
826 | ||
ab480030 | 827 | iwl_mvm_scan_calc_params(mvm, vif, req->n_ssids, 0, ¶ms); |
50df8a30 | 828 | iwl_build_scan_cmd(mvm, vif, req, &scan_cfg->scan_cmd, ¶ms); |
35a000b7 DS |
829 | scan_cfg->scan_cmd.len = cpu_to_le16(cmd_len); |
830 | ||
fb98be5e DS |
831 | iwl_scan_offload_build_ssid(req, scan_cfg->scan_cmd.direct_scan, |
832 | &ssid_bitmap, basic_ssid); | |
35a000b7 DS |
833 | /* build tx frames for supported bands */ |
834 | if (band_2ghz) { | |
835 | iwl_scan_offload_build_tx_cmd(mvm, vif, ies, | |
836 | IEEE80211_BAND_2GHZ, | |
837 | &scan_cfg->scan_cmd.tx_cmd[0], | |
762533ba DS |
838 | probes); |
839 | iwl_build_channel_cfg(mvm, req, scan_cfg->data, | |
89879413 | 840 | IEEE80211_BAND_2GHZ, &head, |
50df8a30 | 841 | ssid_bitmap, ¶ms); |
35a000b7 DS |
842 | } |
843 | if (band_5ghz) { | |
844 | iwl_scan_offload_build_tx_cmd(mvm, vif, ies, | |
845 | IEEE80211_BAND_5GHZ, | |
846 | &scan_cfg->scan_cmd.tx_cmd[1], | |
762533ba | 847 | probes + |
35a000b7 | 848 | SCAN_OFFLOAD_PROBE_REQ_SIZE); |
762533ba | 849 | iwl_build_channel_cfg(mvm, req, scan_cfg->data, |
89879413 | 850 | IEEE80211_BAND_5GHZ, &head, |
50df8a30 | 851 | ssid_bitmap, ¶ms); |
35a000b7 DS |
852 | } |
853 | ||
854 | cmd.data[0] = scan_cfg; | |
855 | cmd.len[0] = cmd_len; | |
856 | cmd.dataflags[0] = IWL_HCMD_DFL_NOCOPY; | |
857 | ||
858 | IWL_DEBUG_SCAN(mvm, "Sending scheduled scan config\n"); | |
859 | ||
860 | ret = iwl_mvm_send_cmd(mvm, &cmd); | |
861 | kfree(scan_cfg); | |
862 | return ret; | |
863 | } | |
864 | ||
865 | int iwl_mvm_config_sched_scan_profiles(struct iwl_mvm *mvm, | |
866 | struct cfg80211_sched_scan_request *req) | |
867 | { | |
868 | struct iwl_scan_offload_profile *profile; | |
869 | struct iwl_scan_offload_profile_cfg *profile_cfg; | |
870 | struct iwl_scan_offload_blacklist *blacklist; | |
871 | struct iwl_host_cmd cmd = { | |
872 | .id = SCAN_OFFLOAD_UPDATE_PROFILES_CMD, | |
35a000b7 DS |
873 | .len[1] = sizeof(*profile_cfg), |
874 | .dataflags[0] = IWL_HCMD_DFL_NOCOPY, | |
875 | .dataflags[1] = IWL_HCMD_DFL_NOCOPY, | |
876 | }; | |
877 | int blacklist_len; | |
878 | int i; | |
879 | int ret; | |
880 | ||
881 | if (WARN_ON(req->n_match_sets > IWL_SCAN_MAX_PROFILES)) | |
882 | return -EIO; | |
883 | ||
884 | if (mvm->fw->ucode_capa.flags & IWL_UCODE_TLV_FLAGS_SHORT_BL) | |
885 | blacklist_len = IWL_SCAN_SHORT_BLACKLIST_LEN; | |
886 | else | |
887 | blacklist_len = IWL_SCAN_MAX_BLACKLIST_LEN; | |
888 | ||
889 | blacklist = kzalloc(sizeof(*blacklist) * blacklist_len, GFP_KERNEL); | |
890 | if (!blacklist) | |
891 | return -ENOMEM; | |
892 | ||
893 | profile_cfg = kzalloc(sizeof(*profile_cfg), GFP_KERNEL); | |
894 | if (!profile_cfg) { | |
895 | ret = -ENOMEM; | |
896 | goto free_blacklist; | |
897 | } | |
898 | ||
899 | cmd.data[0] = blacklist; | |
900 | cmd.len[0] = sizeof(*blacklist) * blacklist_len; | |
901 | cmd.data[1] = profile_cfg; | |
902 | ||
903 | /* No blacklist configuration */ | |
904 | ||
905 | profile_cfg->num_profiles = req->n_match_sets; | |
906 | profile_cfg->active_clients = SCAN_CLIENT_SCHED_SCAN; | |
907 | profile_cfg->pass_match = SCAN_CLIENT_SCHED_SCAN; | |
908 | profile_cfg->match_notify = SCAN_CLIENT_SCHED_SCAN; | |
6e0bbe5e DS |
909 | if (!req->n_match_sets || !req->match_sets[0].ssid.ssid_len) |
910 | profile_cfg->any_beacon_notify = SCAN_CLIENT_SCHED_SCAN; | |
35a000b7 DS |
911 | |
912 | for (i = 0; i < req->n_match_sets; i++) { | |
913 | profile = &profile_cfg->profiles[i]; | |
914 | profile->ssid_index = i; | |
915 | /* Support any cipher and auth algorithm */ | |
916 | profile->unicast_cipher = 0xff; | |
917 | profile->auth_alg = 0xff; | |
918 | profile->network_type = IWL_NETWORK_TYPE_ANY; | |
919 | profile->band_selection = IWL_SCAN_OFFLOAD_SELECT_ANY; | |
920 | profile->client_bitmap = SCAN_CLIENT_SCHED_SCAN; | |
921 | } | |
922 | ||
923 | IWL_DEBUG_SCAN(mvm, "Sending scheduled scan profile config\n"); | |
924 | ||
925 | ret = iwl_mvm_send_cmd(mvm, &cmd); | |
926 | kfree(profile_cfg); | |
927 | free_blacklist: | |
928 | kfree(blacklist); | |
929 | ||
930 | return ret; | |
931 | } | |
932 | ||
933 | int iwl_mvm_sched_scan_start(struct iwl_mvm *mvm, | |
934 | struct cfg80211_sched_scan_request *req) | |
935 | { | |
936 | struct iwl_scan_offload_req scan_req = { | |
937 | .watchdog = IWL_SCHED_SCAN_WATCHDOG, | |
938 | ||
939 | .schedule_line[0].iterations = IWL_FAST_SCHED_SCAN_ITERATIONS, | |
b14fc2be | 940 | .schedule_line[0].delay = cpu_to_le16(req->interval / 1000), |
35a000b7 DS |
941 | .schedule_line[0].full_scan_mul = 1, |
942 | ||
943 | .schedule_line[1].iterations = 0xff, | |
b14fc2be | 944 | .schedule_line[1].delay = cpu_to_le16(req->interval / 1000), |
35a000b7 DS |
945 | .schedule_line[1].full_scan_mul = IWL_FULL_SCAN_MULTIPLIER, |
946 | }; | |
947 | ||
948 | if (req->n_match_sets && req->match_sets[0].ssid.ssid_len) { | |
949 | IWL_DEBUG_SCAN(mvm, | |
950 | "Sending scheduled scan with filtering, filter len %d\n", | |
951 | req->n_match_sets); | |
35a000b7 DS |
952 | } else { |
953 | IWL_DEBUG_SCAN(mvm, | |
954 | "Sending Scheduled scan without filtering\n"); | |
de33fb5e | 955 | scan_req.flags |= cpu_to_le16(IWL_SCAN_OFFLOAD_FLAG_PASS_ALL); |
35a000b7 DS |
956 | } |
957 | ||
e820c2da HD |
958 | if (mvm->last_ebs_successful && |
959 | mvm->fw->ucode_capa.flags & IWL_UCODE_TLV_FLAGS_EBS_SUPPORT) | |
960 | scan_req.flags |= | |
961 | cpu_to_le16(IWL_SCAN_OFFLOAD_FLAG_EBS_ACCURATE_MODE); | |
962 | ||
a1022927 | 963 | return iwl_mvm_send_cmd_pdu(mvm, SCAN_OFFLOAD_REQUEST_CMD, 0, |
35a000b7 DS |
964 | sizeof(scan_req), &scan_req); |
965 | } | |
966 | ||
fb98be5e | 967 | static int iwl_mvm_send_scan_offload_abort(struct iwl_mvm *mvm) |
35a000b7 DS |
968 | { |
969 | int ret; | |
970 | struct iwl_host_cmd cmd = { | |
971 | .id = SCAN_OFFLOAD_ABORT_CMD, | |
35a000b7 DS |
972 | }; |
973 | u32 status; | |
974 | ||
975 | /* Exit instantly with error when device is not ready | |
976 | * to receive scan abort command or it does not perform | |
977 | * scheduled scan currently */ | |
fb98be5e DS |
978 | if (mvm->scan_status != IWL_MVM_SCAN_SCHED && |
979 | (!(mvm->fw->ucode_capa.api[0] & IWL_UCODE_TLV_API_LMAC_SCAN) || | |
980 | mvm->scan_status != IWL_MVM_SCAN_OS)) | |
35a000b7 DS |
981 | return -EIO; |
982 | ||
983 | ret = iwl_mvm_send_cmd_status(mvm, &cmd, &status); | |
984 | if (ret) | |
985 | return ret; | |
986 | ||
987 | if (status != CAN_ABORT_STATUS) { | |
988 | /* | |
989 | * The scan abort will return 1 for success or | |
990 | * 2 for "failure". A failure condition can be | |
991 | * due to simply not being in an active scan which | |
992 | * can occur if we send the scan abort before the | |
993 | * microcode has notified us that a scan is completed. | |
994 | */ | |
995 | IWL_DEBUG_SCAN(mvm, "SCAN OFFLOAD ABORT ret %d.\n", status); | |
33ea27f6 | 996 | ret = -ENOENT; |
35a000b7 DS |
997 | } |
998 | ||
999 | return ret; | |
1000 | } | |
1001 | ||
fb98be5e | 1002 | int iwl_mvm_scan_offload_stop(struct iwl_mvm *mvm, bool notify) |
35a000b7 DS |
1003 | { |
1004 | int ret; | |
33ea27f6 AN |
1005 | struct iwl_notification_wait wait_scan_done; |
1006 | static const u8 scan_done_notif[] = { SCAN_OFFLOAD_COMPLETE, }; | |
fb98be5e | 1007 | bool sched = mvm->scan_status == IWL_MVM_SCAN_SCHED; |
35a000b7 DS |
1008 | |
1009 | lockdep_assert_held(&mvm->mutex); | |
1010 | ||
fb98be5e DS |
1011 | if (mvm->scan_status != IWL_MVM_SCAN_SCHED && |
1012 | (!(mvm->fw->ucode_capa.api[0] & IWL_UCODE_TLV_API_LMAC_SCAN) || | |
1013 | mvm->scan_status != IWL_MVM_SCAN_OS)) { | |
1014 | IWL_DEBUG_SCAN(mvm, "No scan to stop\n"); | |
33ea27f6 | 1015 | return 0; |
35a000b7 DS |
1016 | } |
1017 | ||
33ea27f6 AN |
1018 | iwl_init_notification_wait(&mvm->notif_wait, &wait_scan_done, |
1019 | scan_done_notif, | |
1020 | ARRAY_SIZE(scan_done_notif), | |
1021 | NULL, NULL); | |
1022 | ||
fb98be5e | 1023 | ret = iwl_mvm_send_scan_offload_abort(mvm); |
33ea27f6 | 1024 | if (ret) { |
fb98be5e DS |
1025 | IWL_DEBUG_SCAN(mvm, "Send stop %sscan failed %d\n", |
1026 | sched ? "offloaded " : "", ret); | |
33ea27f6 AN |
1027 | iwl_remove_notification(&mvm->notif_wait, &wait_scan_done); |
1028 | return ret; | |
1029 | } | |
1030 | ||
fb98be5e DS |
1031 | IWL_DEBUG_SCAN(mvm, "Successfully sent stop %sscan\n", |
1032 | sched ? "offloaded " : ""); | |
33ea27f6 AN |
1033 | |
1034 | ret = iwl_wait_notification(&mvm->notif_wait, &wait_scan_done, 1 * HZ); | |
1035 | if (ret) | |
1036 | return ret; | |
1037 | ||
1038 | /* | |
1039 | * Clear the scan status so the next scan requests will succeed. This | |
1040 | * also ensures the Rx handler doesn't do anything, as the scan was | |
1041 | * stopped from above. | |
1042 | */ | |
1043 | mvm->scan_status = IWL_MVM_SCAN_NONE; | |
1044 | ||
fb98be5e DS |
1045 | if (notify) { |
1046 | if (sched) | |
1047 | ieee80211_sched_scan_stopped(mvm->hw); | |
1048 | else | |
1049 | ieee80211_scan_completed(mvm->hw, true); | |
1050 | } | |
636a2cdc | 1051 | |
33ea27f6 | 1052 | return 0; |
35a000b7 | 1053 | } |
fb98be5e DS |
1054 | |
1055 | static void iwl_mvm_unified_scan_fill_tx_cmd(struct iwl_mvm *mvm, | |
1056 | struct iwl_scan_req_tx_cmd *tx_cmd, | |
1057 | bool no_cck) | |
1058 | { | |
1059 | tx_cmd[0].tx_flags = cpu_to_le32(TX_CMD_FLG_SEQ_CTL | | |
1060 | TX_CMD_FLG_BT_DIS); | |
1061 | tx_cmd[0].rate_n_flags = iwl_mvm_scan_rate_n_flags(mvm, | |
1062 | IEEE80211_BAND_2GHZ, | |
1063 | no_cck); | |
1064 | tx_cmd[0].sta_id = mvm->aux_sta.sta_id; | |
1065 | ||
1066 | tx_cmd[1].tx_flags = cpu_to_le32(TX_CMD_FLG_SEQ_CTL | | |
1067 | TX_CMD_FLG_BT_DIS); | |
1068 | tx_cmd[1].rate_n_flags = iwl_mvm_scan_rate_n_flags(mvm, | |
1069 | IEEE80211_BAND_5GHZ, | |
1070 | no_cck); | |
1071 | tx_cmd[1].sta_id = mvm->aux_sta.sta_id; | |
1072 | } | |
1073 | ||
1074 | static void | |
1075 | iwl_mvm_lmac_scan_cfg_channels(struct iwl_mvm *mvm, | |
1076 | struct ieee80211_channel **channels, | |
1077 | int n_channels, u32 ssid_bitmap, | |
1078 | struct iwl_scan_req_unified_lmac *cmd) | |
1079 | { | |
1080 | struct iwl_scan_channel_cfg_lmac *channel_cfg = (void *)&cmd->data; | |
1081 | int i; | |
1082 | ||
1083 | for (i = 0; i < n_channels; i++) { | |
1084 | channel_cfg[i].channel_num = | |
1085 | cpu_to_le16(channels[i]->hw_value); | |
1086 | channel_cfg[i].iter_count = cpu_to_le16(1); | |
1087 | channel_cfg[i].iter_interval = 0; | |
1088 | channel_cfg[i].flags = | |
1089 | cpu_to_le32(IWL_UNIFIED_SCAN_CHANNEL_PARTIAL | | |
1090 | ssid_bitmap); | |
1091 | } | |
1092 | } | |
1093 | ||
1094 | static void | |
1095 | iwl_mvm_build_unified_scan_probe(struct iwl_mvm *mvm, struct ieee80211_vif *vif, | |
1096 | struct ieee80211_scan_ies *ies, | |
1097 | struct iwl_scan_req_unified_lmac *cmd) | |
1098 | { | |
1099 | struct iwl_scan_probe_req *preq = (void *)(cmd->data + | |
1100 | sizeof(struct iwl_scan_channel_cfg_lmac) * | |
1101 | mvm->fw->ucode_capa.n_scan_channels); | |
1102 | struct ieee80211_mgmt *frame = (struct ieee80211_mgmt *)preq->buf; | |
1103 | u8 *pos; | |
1104 | ||
1105 | frame->frame_control = cpu_to_le16(IEEE80211_STYPE_PROBE_REQ); | |
1106 | eth_broadcast_addr(frame->da); | |
1107 | memcpy(frame->sa, vif->addr, ETH_ALEN); | |
1108 | eth_broadcast_addr(frame->bssid); | |
1109 | frame->seq_ctrl = 0; | |
1110 | ||
1111 | pos = frame->u.probe_req.variable; | |
1112 | *pos++ = WLAN_EID_SSID; | |
1113 | *pos++ = 0; | |
1114 | ||
1115 | preq->mac_header.offset = 0; | |
1116 | preq->mac_header.len = cpu_to_le16(24 + 2); | |
1117 | ||
1118 | memcpy(pos, ies->ies[IEEE80211_BAND_2GHZ], | |
1119 | ies->len[IEEE80211_BAND_2GHZ]); | |
1120 | preq->band_data[0].offset = cpu_to_le16(pos - preq->buf); | |
1121 | preq->band_data[0].len = cpu_to_le16(ies->len[IEEE80211_BAND_2GHZ]); | |
1122 | pos += ies->len[IEEE80211_BAND_2GHZ]; | |
1123 | ||
1124 | memcpy(pos, ies->ies[IEEE80211_BAND_5GHZ], | |
1125 | ies->len[IEEE80211_BAND_5GHZ]); | |
1126 | preq->band_data[1].offset = cpu_to_le16(pos - preq->buf); | |
1127 | preq->band_data[1].len = cpu_to_le16(ies->len[IEEE80211_BAND_5GHZ]); | |
1128 | pos += ies->len[IEEE80211_BAND_5GHZ]; | |
1129 | ||
1130 | memcpy(pos, ies->common_ies, ies->common_ie_len); | |
1131 | preq->common_data.offset = cpu_to_le16(pos - preq->buf); | |
1132 | preq->common_data.len = cpu_to_le16(ies->common_ie_len); | |
1133 | } | |
1134 | ||
1135 | static void | |
1136 | iwl_mvm_build_generic_unified_scan_cmd(struct iwl_mvm *mvm, | |
1137 | struct iwl_scan_req_unified_lmac *cmd, | |
1138 | struct iwl_mvm_scan_params *params) | |
1139 | { | |
af91344c | 1140 | memset(cmd, 0, ksize(cmd)); |
2ce89cd6 DS |
1141 | cmd->active_dwell = params->dwell[IEEE80211_BAND_2GHZ].active; |
1142 | cmd->passive_dwell = params->dwell[IEEE80211_BAND_2GHZ].passive; | |
1143 | if (params->passive_fragmented) | |
1144 | cmd->fragmented_dwell = | |
1145 | params->dwell[IEEE80211_BAND_2GHZ].passive; | |
fb98be5e DS |
1146 | cmd->rx_chain_select = iwl_mvm_scan_rx_chain(mvm); |
1147 | cmd->max_out_time = cpu_to_le32(params->max_out_time); | |
1148 | cmd->suspend_time = cpu_to_le32(params->suspend_time); | |
1149 | cmd->scan_prio = cpu_to_le32(IWL_SCAN_PRIORITY_HIGH); | |
fb98be5e | 1150 | cmd->iter_num = cpu_to_le32(1); |
af91344c DS |
1151 | |
1152 | if (mvm->fw->ucode_capa.flags & IWL_UCODE_TLV_FLAGS_EBS_SUPPORT && | |
1153 | mvm->last_ebs_successful) { | |
1154 | cmd->channel_opt[0].flags = | |
1155 | cpu_to_le16(IWL_SCAN_CHANNEL_FLAG_EBS | | |
1156 | IWL_SCAN_CHANNEL_FLAG_EBS_ACCURATE | | |
1157 | IWL_SCAN_CHANNEL_FLAG_CACHE_ADD); | |
1158 | cmd->channel_opt[1].flags = | |
1159 | cpu_to_le16(IWL_SCAN_CHANNEL_FLAG_EBS | | |
1160 | IWL_SCAN_CHANNEL_FLAG_EBS_ACCURATE | | |
1161 | IWL_SCAN_CHANNEL_FLAG_CACHE_ADD); | |
1162 | } | |
73897bd1 AO |
1163 | |
1164 | if (iwl_mvm_rrm_scan_needed(mvm)) | |
1165 | cmd->scan_flags |= | |
1166 | cpu_to_le32(IWL_MVM_LMAC_SCAN_FLAGS_RRM_ENABLED); | |
fb98be5e DS |
1167 | } |
1168 | ||
1169 | int iwl_mvm_unified_scan_lmac(struct iwl_mvm *mvm, | |
1170 | struct ieee80211_vif *vif, | |
1171 | struct ieee80211_scan_request *req) | |
1172 | { | |
1173 | struct iwl_host_cmd hcmd = { | |
1174 | .id = SCAN_OFFLOAD_REQUEST_CMD, | |
1175 | .len = { sizeof(struct iwl_scan_req_unified_lmac) + | |
1176 | sizeof(struct iwl_scan_channel_cfg_lmac) * | |
1177 | mvm->fw->ucode_capa.n_scan_channels + | |
1178 | sizeof(struct iwl_scan_probe_req), }, | |
1179 | .data = { mvm->scan_cmd, }, | |
1180 | .dataflags = { IWL_HCMD_DFL_NOCOPY, }, | |
1181 | }; | |
1182 | struct iwl_scan_req_unified_lmac *cmd = mvm->scan_cmd; | |
1183 | struct iwl_mvm_scan_params params = {}; | |
1184 | u32 flags; | |
1185 | int ssid_bitmap = 0; | |
1186 | int ret, i; | |
1187 | ||
1188 | lockdep_assert_held(&mvm->mutex); | |
1189 | ||
1190 | /* we should have failed registration if scan_cmd was NULL */ | |
1191 | if (WARN_ON(mvm->scan_cmd == NULL)) | |
1192 | return -ENOMEM; | |
1193 | ||
1194 | if (WARN_ON_ONCE(req->req.n_ssids > PROBE_OPTION_MAX || | |
1195 | req->ies.common_ie_len + req->ies.len[0] + | |
1196 | req->ies.len[1] + 24 + 2 > | |
1197 | SCAN_OFFLOAD_PROBE_REQ_SIZE || | |
1198 | req->req.n_channels > | |
1199 | mvm->fw->ucode_capa.n_scan_channels)) | |
1200 | return -1; | |
1201 | ||
1202 | mvm->scan_status = IWL_MVM_SCAN_OS; | |
1203 | ||
1204 | iwl_mvm_scan_calc_params(mvm, vif, req->req.n_ssids, req->req.flags, | |
1205 | ¶ms); | |
1206 | ||
1207 | iwl_mvm_build_generic_unified_scan_cmd(mvm, cmd, ¶ms); | |
1208 | ||
1209 | cmd->n_channels = (u8)req->req.n_channels; | |
1210 | ||
1211 | flags = IWL_MVM_LMAC_SCAN_FLAG_PASS_ALL; | |
1212 | ||
1213 | if (req->req.n_ssids == 1 && req->req.ssids[0].ssid_len != 0) | |
1214 | flags |= IWL_MVM_LMAC_SCAN_FLAG_PRE_CONNECTION; | |
1215 | ||
1216 | if (params.passive_fragmented) | |
1217 | flags |= IWL_MVM_LMAC_SCAN_FLAG_FRAGMENTED; | |
1218 | ||
1219 | if (req->req.n_ssids == 0) | |
1220 | flags |= IWL_MVM_LMAC_SCAN_FLAG_PASSIVE; | |
1221 | ||
73897bd1 | 1222 | cmd->scan_flags |= cpu_to_le32(flags); |
fb98be5e DS |
1223 | |
1224 | cmd->flags = iwl_mvm_scan_rxon_flags(req->req.channels[0]->band); | |
1225 | cmd->filter_flags = cpu_to_le32(MAC_FILTER_ACCEPT_GRP | | |
1226 | MAC_FILTER_IN_BEACON); | |
1227 | iwl_mvm_unified_scan_fill_tx_cmd(mvm, cmd->tx_cmd, req->req.no_cck); | |
1228 | iwl_mvm_scan_fill_ssids(cmd->direct_scan, req->req.ssids, | |
1229 | req->req.n_ssids, 0); | |
1230 | ||
1231 | cmd->schedule[0].delay = 0; | |
1232 | cmd->schedule[0].iterations = 1; | |
1233 | cmd->schedule[0].full_scan_mul = 0; | |
1234 | cmd->schedule[1].delay = 0; | |
1235 | cmd->schedule[1].iterations = 0; | |
1236 | cmd->schedule[1].full_scan_mul = 0; | |
1237 | ||
1238 | for (i = 1; i <= req->req.n_ssids; i++) | |
1239 | ssid_bitmap |= BIT(i); | |
1240 | ||
1241 | iwl_mvm_lmac_scan_cfg_channels(mvm, req->req.channels, | |
1242 | req->req.n_channels, ssid_bitmap, | |
1243 | cmd); | |
1244 | ||
1245 | iwl_mvm_build_unified_scan_probe(mvm, vif, &req->ies, cmd); | |
1246 | ||
1247 | ret = iwl_mvm_send_cmd(mvm, &hcmd); | |
1248 | if (!ret) { | |
1249 | IWL_DEBUG_SCAN(mvm, "Scan request was sent successfully\n"); | |
1250 | } else { | |
1251 | /* | |
1252 | * If the scan failed, it usually means that the FW was unable | |
1253 | * to allocate the time events. Warn on it, but maybe we | |
1254 | * should try to send the command again with different params. | |
1255 | */ | |
1256 | IWL_ERR(mvm, "Scan failed! ret %d\n", ret); | |
1257 | mvm->scan_status = IWL_MVM_SCAN_NONE; | |
1258 | ret = -EIO; | |
1259 | } | |
1260 | return ret; | |
1261 | } | |
1262 | ||
1263 | int iwl_mvm_unified_sched_scan_lmac(struct iwl_mvm *mvm, | |
1264 | struct ieee80211_vif *vif, | |
1265 | struct cfg80211_sched_scan_request *req, | |
1266 | struct ieee80211_scan_ies *ies) | |
1267 | { | |
1268 | struct iwl_host_cmd hcmd = { | |
1269 | .id = SCAN_OFFLOAD_REQUEST_CMD, | |
1270 | .len = { sizeof(struct iwl_scan_req_unified_lmac) + | |
1271 | sizeof(struct iwl_scan_channel_cfg_lmac) * | |
1272 | mvm->fw->ucode_capa.n_scan_channels + | |
1273 | sizeof(struct iwl_scan_probe_req), }, | |
1274 | .data = { mvm->scan_cmd, }, | |
1275 | .dataflags = { IWL_HCMD_DFL_NOCOPY, }, | |
1276 | }; | |
1277 | struct iwl_scan_req_unified_lmac *cmd = mvm->scan_cmd; | |
1278 | struct iwl_mvm_scan_params params = {}; | |
1279 | int ret; | |
1280 | u32 flags = 0, ssid_bitmap = 0; | |
1281 | ||
1282 | lockdep_assert_held(&mvm->mutex); | |
1283 | ||
1284 | /* we should have failed registration if scan_cmd was NULL */ | |
1285 | if (WARN_ON(mvm->scan_cmd == NULL)) | |
1286 | return -ENOMEM; | |
1287 | ||
1288 | if (WARN_ON_ONCE(req->n_ssids > PROBE_OPTION_MAX || | |
1289 | ies->common_ie_len + ies->len[0] + ies->len[1] + 24 + 2 | |
1290 | > SCAN_OFFLOAD_PROBE_REQ_SIZE || | |
1291 | req->n_channels > mvm->fw->ucode_capa.n_scan_channels)) | |
1292 | return -ENOBUFS; | |
1293 | ||
1294 | iwl_mvm_scan_calc_params(mvm, vif, req->n_ssids, 0, ¶ms); | |
1295 | ||
1296 | iwl_mvm_build_generic_unified_scan_cmd(mvm, cmd, ¶ms); | |
1297 | ||
1298 | cmd->n_channels = (u8)req->n_channels; | |
1299 | ||
1300 | if (req->n_match_sets && req->match_sets[0].ssid.ssid_len) { | |
1301 | IWL_DEBUG_SCAN(mvm, | |
1302 | "Sending scheduled scan with filtering, n_match_sets %d\n", | |
1303 | req->n_match_sets); | |
1304 | } else { | |
1305 | IWL_DEBUG_SCAN(mvm, | |
1306 | "Sending Scheduled scan without filtering\n"); | |
1307 | flags |= IWL_MVM_LMAC_SCAN_FLAG_PASS_ALL; | |
1308 | } | |
1309 | ||
1310 | if (req->n_ssids == 1 && req->ssids[0].ssid_len != 0) | |
1311 | flags |= IWL_MVM_LMAC_SCAN_FLAG_PRE_CONNECTION; | |
1312 | ||
1313 | if (params.passive_fragmented) | |
1314 | flags |= IWL_MVM_LMAC_SCAN_FLAG_FRAGMENTED; | |
1315 | ||
1316 | if (req->n_ssids == 0) | |
1317 | flags |= IWL_MVM_LMAC_SCAN_FLAG_PASSIVE; | |
1318 | ||
73897bd1 | 1319 | cmd->scan_flags |= cpu_to_le32(flags); |
fb98be5e DS |
1320 | |
1321 | cmd->flags = iwl_mvm_scan_rxon_flags(req->channels[0]->band); | |
1322 | cmd->filter_flags = cpu_to_le32(MAC_FILTER_ACCEPT_GRP | | |
1323 | MAC_FILTER_IN_BEACON); | |
1324 | iwl_mvm_unified_scan_fill_tx_cmd(mvm, cmd->tx_cmd, false); | |
1325 | iwl_scan_offload_build_ssid(req, cmd->direct_scan, &ssid_bitmap, false); | |
1326 | ||
b14fc2be | 1327 | cmd->schedule[0].delay = cpu_to_le16(req->interval / MSEC_PER_SEC); |
fb98be5e DS |
1328 | cmd->schedule[0].iterations = IWL_FAST_SCHED_SCAN_ITERATIONS; |
1329 | cmd->schedule[0].full_scan_mul = 1; | |
1330 | ||
b14fc2be | 1331 | cmd->schedule[1].delay = cpu_to_le16(req->interval / MSEC_PER_SEC); |
fb98be5e DS |
1332 | cmd->schedule[1].iterations = 0xff; |
1333 | cmd->schedule[1].full_scan_mul = IWL_FULL_SCAN_MULTIPLIER; | |
1334 | ||
1335 | iwl_mvm_lmac_scan_cfg_channels(mvm, req->channels, req->n_channels, | |
1336 | ssid_bitmap, cmd); | |
1337 | ||
1338 | iwl_mvm_build_unified_scan_probe(mvm, vif, ies, cmd); | |
1339 | ||
1340 | ret = iwl_mvm_send_cmd(mvm, &hcmd); | |
1341 | if (!ret) { | |
1342 | IWL_DEBUG_SCAN(mvm, | |
1343 | "Sched scan request was sent successfully\n"); | |
1344 | } else { | |
1345 | /* | |
1346 | * If the scan failed, it usually means that the FW was unable | |
1347 | * to allocate the time events. Warn on it, but maybe we | |
1348 | * should try to send the command again with different params. | |
1349 | */ | |
1350 | IWL_ERR(mvm, "Sched scan failed! ret %d\n", ret); | |
1351 | mvm->scan_status = IWL_MVM_SCAN_NONE; | |
1352 | ret = -EIO; | |
1353 | } | |
1354 | return ret; | |
1355 | } | |
1356 | ||
1357 | ||
1358 | int iwl_mvm_cancel_scan(struct iwl_mvm *mvm) | |
1359 | { | |
1360 | if (mvm->fw->ucode_capa.api[0] & IWL_UCODE_TLV_API_LMAC_SCAN) | |
1361 | return iwl_mvm_scan_offload_stop(mvm, true); | |
1362 | return iwl_mvm_cancel_regular_scan(mvm); | |
1363 | } |