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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. |
8ca151b5 JB |
9 | * |
10 | * This program is free software; you can redistribute it and/or modify | |
11 | * it under the terms of version 2 of the GNU General Public License as | |
12 | * published by the Free Software Foundation. | |
13 | * | |
14 | * This program is distributed in the hope that it will be useful, but | |
15 | * WITHOUT ANY WARRANTY; without even the implied warranty of | |
16 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU | |
17 | * General Public License for more details. | |
18 | * | |
19 | * You should have received a copy of the GNU General Public License | |
20 | * along with this program; if not, write to the Free Software | |
21 | * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110, | |
22 | * USA | |
23 | * | |
24 | * The full GNU General Public License is included in this distribution | |
410dc5aa | 25 | * in the file called COPYING. |
8ca151b5 JB |
26 | * |
27 | * Contact Information: | |
28 | * Intel Linux Wireless <ilw@linux.intel.com> | |
29 | * Intel Corporation, 5200 N.E. Elam Young Parkway, Hillsboro, OR 97124-6497 | |
30 | * | |
31 | * BSD LICENSE | |
32 | * | |
51368bf7 | 33 | * Copyright(c) 2012 - 2014 Intel Corporation. All rights reserved. |
8ca151b5 JB |
34 | * All rights reserved. |
35 | * | |
36 | * Redistribution and use in source and binary forms, with or without | |
37 | * modification, are permitted provided that the following conditions | |
38 | * are met: | |
39 | * | |
40 | * * Redistributions of source code must retain the above copyright | |
41 | * notice, this list of conditions and the following disclaimer. | |
42 | * * Redistributions in binary form must reproduce the above copyright | |
43 | * notice, this list of conditions and the following disclaimer in | |
44 | * the documentation and/or other materials provided with the | |
45 | * distribution. | |
46 | * * Neither the name Intel Corporation nor the names of its | |
47 | * contributors may be used to endorse or promote products derived | |
48 | * from this software without specific prior written permission. | |
49 | * | |
50 | * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS | |
51 | * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT | |
52 | * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR | |
53 | * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT | |
54 | * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, | |
55 | * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT | |
56 | * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, | |
57 | * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY | |
58 | * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT | |
59 | * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE | |
60 | * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. | |
61 | * | |
62 | *****************************************************************************/ | |
63 | ||
64 | #include <linux/etherdevice.h> | |
65 | #include <net/mac80211.h> | |
66 | ||
67 | #include "mvm.h" | |
68 | #include "iwl-eeprom-parse.h" | |
69 | #include "fw-api-scan.h" | |
70 | ||
71 | #define IWL_PLCP_QUIET_THRESH 1 | |
72 | #define IWL_ACTIVE_QUIET_TIME 10 | |
8a110d9b AB |
73 | |
74 | struct iwl_mvm_scan_params { | |
75 | u32 max_out_time; | |
76 | u32 suspend_time; | |
50df8a30 AB |
77 | bool passive_fragmented; |
78 | struct _dwell { | |
79 | u16 passive; | |
80 | u16 active; | |
81 | } dwell[IEEE80211_NUM_BANDS]; | |
8a110d9b | 82 | }; |
8ca151b5 JB |
83 | |
84 | static inline __le16 iwl_mvm_scan_rx_chain(struct iwl_mvm *mvm) | |
85 | { | |
86 | u16 rx_chain; | |
91b05d10 | 87 | u8 rx_ant; |
8ca151b5 | 88 | |
91b05d10 OG |
89 | if (mvm->scan_rx_ant != ANT_NONE) |
90 | rx_ant = mvm->scan_rx_ant; | |
91 | else | |
4ed735e7 | 92 | rx_ant = mvm->fw->valid_rx_ant; |
8ca151b5 JB |
93 | rx_chain = rx_ant << PHY_RX_CHAIN_VALID_POS; |
94 | rx_chain |= rx_ant << PHY_RX_CHAIN_FORCE_MIMO_SEL_POS; | |
95 | rx_chain |= rx_ant << PHY_RX_CHAIN_FORCE_SEL_POS; | |
96 | rx_chain |= 0x1 << PHY_RX_CHAIN_DRIVER_FORCE_POS; | |
97 | return cpu_to_le16(rx_chain); | |
98 | } | |
99 | ||
fb98be5e | 100 | static __le32 iwl_mvm_scan_rxon_flags(enum ieee80211_band band) |
8ca151b5 | 101 | { |
fb98be5e | 102 | if (band == IEEE80211_BAND_2GHZ) |
8ca151b5 JB |
103 | return cpu_to_le32(PHY_BAND_24); |
104 | else | |
105 | return cpu_to_le32(PHY_BAND_5); | |
106 | } | |
107 | ||
108 | static inline __le32 | |
109 | iwl_mvm_scan_rate_n_flags(struct iwl_mvm *mvm, enum ieee80211_band band, | |
110 | bool no_cck) | |
111 | { | |
112 | u32 tx_ant; | |
113 | ||
114 | mvm->scan_last_antenna_idx = | |
4ed735e7 | 115 | iwl_mvm_next_antenna(mvm, mvm->fw->valid_tx_ant, |
8ca151b5 JB |
116 | mvm->scan_last_antenna_idx); |
117 | tx_ant = BIT(mvm->scan_last_antenna_idx) << RATE_MCS_ANT_POS; | |
118 | ||
119 | if (band == IEEE80211_BAND_2GHZ && !no_cck) | |
120 | return cpu_to_le32(IWL_RATE_1M_PLCP | RATE_MCS_CCK_MSK | | |
121 | tx_ant); | |
122 | else | |
123 | return cpu_to_le32(IWL_RATE_6M_PLCP | tx_ant); | |
124 | } | |
125 | ||
126 | /* | |
127 | * We insert the SSIDs in an inverted order, because the FW will | |
128 | * invert it back. The most prioritized SSID, which is first in the | |
129 | * request list, is not copied here, but inserted directly to the probe | |
130 | * request. | |
131 | */ | |
fb98be5e DS |
132 | static void iwl_mvm_scan_fill_ssids(struct iwl_ssid_ie *cmd_ssid, |
133 | struct cfg80211_ssid *ssids, | |
134 | int n_ssids, int first) | |
8ca151b5 JB |
135 | { |
136 | int fw_idx, req_idx; | |
137 | ||
fb98be5e | 138 | for (req_idx = n_ssids - 1, fw_idx = 0; req_idx >= first; |
fe04e837 | 139 | req_idx--, fw_idx++) { |
fb98be5e DS |
140 | cmd_ssid[fw_idx].id = WLAN_EID_SSID; |
141 | cmd_ssid[fw_idx].len = ssids[req_idx].ssid_len; | |
142 | memcpy(cmd_ssid[fw_idx].ssid, | |
143 | ssids[req_idx].ssid, | |
144 | ssids[req_idx].ssid_len); | |
8ca151b5 JB |
145 | } |
146 | } | |
147 | ||
148 | /* | |
149 | * If req->n_ssids > 0, it means we should do an active scan. | |
150 | * In case of active scan w/o directed scan, we receive a zero-length SSID | |
151 | * just to notify that this scan is active and not passive. | |
152 | * In order to notify the FW of the number of SSIDs we wish to scan (including | |
153 | * the zero-length one), we need to set the corresponding bits in chan->type, | |
20f1a5de DS |
154 | * one for each SSID, and set the active bit (first). If the first SSID is |
155 | * already included in the probe template, so we need to set only | |
156 | * req->n_ssids - 1 bits in addition to the first bit. | |
8ca151b5 JB |
157 | */ |
158 | static u16 iwl_mvm_get_active_dwell(enum ieee80211_band band, int n_ssids) | |
159 | { | |
160 | if (band == IEEE80211_BAND_2GHZ) | |
161 | return 30 + 3 * (n_ssids + 1); | |
162 | return 20 + 2 * (n_ssids + 1); | |
163 | } | |
164 | ||
165 | static u16 iwl_mvm_get_passive_dwell(enum ieee80211_band band) | |
166 | { | |
167 | return band == IEEE80211_BAND_2GHZ ? 100 + 20 : 100 + 10; | |
168 | } | |
169 | ||
170 | static void iwl_mvm_scan_fill_channels(struct iwl_scan_cmd *cmd, | |
20f1a5de | 171 | struct cfg80211_scan_request *req, |
50df8a30 AB |
172 | bool basic_ssid, |
173 | struct iwl_mvm_scan_params *params) | |
8ca151b5 | 174 | { |
8ca151b5 JB |
175 | struct iwl_scan_channel *chan = (struct iwl_scan_channel *) |
176 | (cmd->data + le16_to_cpu(cmd->tx_cmd.len)); | |
177 | int i; | |
20f1a5de | 178 | int type = BIT(req->n_ssids) - 1; |
50df8a30 | 179 | enum ieee80211_band band = req->channels[0]->band; |
20f1a5de DS |
180 | |
181 | if (!basic_ssid) | |
182 | type |= BIT(req->n_ssids); | |
8ca151b5 JB |
183 | |
184 | for (i = 0; i < cmd->channel_count; i++) { | |
185 | chan->channel = cpu_to_le16(req->channels[i]->hw_value); | |
20f1a5de | 186 | chan->type = cpu_to_le32(type); |
8fe02e16 | 187 | if (req->channels[i]->flags & IEEE80211_CHAN_NO_IR) |
bb963c4a | 188 | chan->type &= cpu_to_le32(~SCAN_CHANNEL_TYPE_ACTIVE); |
50df8a30 AB |
189 | chan->active_dwell = cpu_to_le16(params->dwell[band].active); |
190 | chan->passive_dwell = cpu_to_le16(params->dwell[band].passive); | |
8ca151b5 JB |
191 | chan->iteration_count = cpu_to_le16(1); |
192 | chan++; | |
193 | } | |
194 | } | |
195 | ||
196 | /* | |
197 | * Fill in probe request with the following parameters: | |
198 | * TA is our vif HW address, which mac80211 ensures we have. | |
199 | * Packet is broadcasted, so this is both SA and DA. | |
200 | * The probe request IE is made out of two: first comes the most prioritized | |
201 | * SSID if a directed scan is requested. Second comes whatever extra | |
202 | * information was given to us as the scan request IE. | |
203 | */ | |
204 | static u16 iwl_mvm_fill_probe_req(struct ieee80211_mgmt *frame, const u8 *ta, | |
205 | int n_ssids, const u8 *ssid, int ssid_len, | |
633e2713 DS |
206 | const u8 *band_ie, int band_ie_len, |
207 | const u8 *common_ie, int common_ie_len, | |
8ca151b5 JB |
208 | int left) |
209 | { | |
210 | int len = 0; | |
211 | u8 *pos = NULL; | |
212 | ||
213 | /* Make sure there is enough space for the probe request, | |
214 | * two mandatory IEs and the data */ | |
215 | left -= 24; | |
216 | if (left < 0) | |
217 | return 0; | |
218 | ||
219 | frame->frame_control = cpu_to_le16(IEEE80211_STYPE_PROBE_REQ); | |
220 | eth_broadcast_addr(frame->da); | |
221 | memcpy(frame->sa, ta, ETH_ALEN); | |
222 | eth_broadcast_addr(frame->bssid); | |
223 | frame->seq_ctrl = 0; | |
224 | ||
225 | len += 24; | |
226 | ||
227 | /* for passive scans, no need to fill anything */ | |
228 | if (n_ssids == 0) | |
229 | return (u16)len; | |
230 | ||
231 | /* points to the payload of the request */ | |
232 | pos = &frame->u.probe_req.variable[0]; | |
233 | ||
234 | /* fill in our SSID IE */ | |
235 | left -= ssid_len + 2; | |
236 | if (left < 0) | |
237 | return 0; | |
238 | *pos++ = WLAN_EID_SSID; | |
239 | *pos++ = ssid_len; | |
240 | if (ssid && ssid_len) { /* ssid_len may be == 0 even if ssid is valid */ | |
241 | memcpy(pos, ssid, ssid_len); | |
242 | pos += ssid_len; | |
243 | } | |
244 | ||
245 | len += ssid_len + 2; | |
246 | ||
633e2713 | 247 | if (WARN_ON(left < band_ie_len + common_ie_len)) |
8ca151b5 JB |
248 | return len; |
249 | ||
633e2713 DS |
250 | if (band_ie && band_ie_len) { |
251 | memcpy(pos, band_ie, band_ie_len); | |
252 | pos += band_ie_len; | |
253 | len += band_ie_len; | |
254 | } | |
255 | ||
256 | if (common_ie && common_ie_len) { | |
257 | memcpy(pos, common_ie, common_ie_len); | |
258 | pos += common_ie_len; | |
259 | len += common_ie_len; | |
8ca151b5 JB |
260 | } |
261 | ||
262 | return (u16)len; | |
263 | } | |
264 | ||
8a110d9b AB |
265 | static void iwl_mvm_scan_condition_iterator(void *data, u8 *mac, |
266 | struct ieee80211_vif *vif) | |
61f6325d | 267 | { |
8a110d9b AB |
268 | struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif); |
269 | bool *global_bound = data; | |
61f6325d | 270 | |
8a110d9b AB |
271 | if (mvmvif->phy_ctxt && mvmvif->phy_ctxt->id < MAX_PHYS) |
272 | *global_bound = true; | |
273 | } | |
274 | ||
275 | static void iwl_mvm_scan_calc_params(struct iwl_mvm *mvm, | |
50df8a30 | 276 | struct ieee80211_vif *vif, |
ab480030 | 277 | int n_ssids, u32 flags, |
8a110d9b AB |
278 | struct iwl_mvm_scan_params *params) |
279 | { | |
280 | bool global_bound = false; | |
50df8a30 | 281 | enum ieee80211_band band; |
2ce89cd6 | 282 | u8 frag_passive_dwell = 0; |
8a110d9b AB |
283 | |
284 | ieee80211_iterate_active_interfaces_atomic(mvm->hw, | |
285 | IEEE80211_IFACE_ITER_NORMAL, | |
286 | iwl_mvm_scan_condition_iterator, | |
287 | &global_bound); | |
ef67f18d AB |
288 | |
289 | if (!global_bound) | |
290 | goto not_bound; | |
291 | ||
2ce89cd6 DS |
292 | params->suspend_time = 30; |
293 | params->max_out_time = 170; | |
ef67f18d AB |
294 | |
295 | if (iwl_mvm_low_latency(mvm)) { | |
2ce89cd6 DS |
296 | if (mvm->fw->ucode_capa.api[0] & |
297 | IWL_UCODE_TLV_API_FRAGMENTED_SCAN) { | |
298 | params->suspend_time = 105; | |
299 | params->max_out_time = 70; | |
300 | frag_passive_dwell = 20; | |
301 | } else { | |
302 | params->suspend_time = 120; | |
303 | params->max_out_time = 120; | |
304 | } | |
305 | } | |
306 | ||
307 | if (frag_passive_dwell && (mvm->fw->ucode_capa.api[0] & | |
308 | IWL_UCODE_TLV_API_FRAGMENTED_SCAN)) { | |
309 | /* | |
310 | * P2P device scan should not be fragmented to avoid negative | |
311 | * impact on P2P device discovery. Configure max_out_time to be | |
312 | * equal to dwell time on passive channel. Take a longest | |
313 | * possible value, one that corresponds to 2GHz band | |
314 | */ | |
315 | if (vif->type == NL80211_IFTYPE_P2P_DEVICE) { | |
316 | u32 passive_dwell = | |
317 | iwl_mvm_get_passive_dwell(IEEE80211_BAND_2GHZ); | |
318 | params->max_out_time = passive_dwell; | |
319 | } else { | |
320 | params->passive_fragmented = true; | |
321 | } | |
50df8a30 | 322 | } |
8a110d9b | 323 | |
ab480030 JB |
324 | if (flags & NL80211_SCAN_FLAG_LOW_PRIORITY) |
325 | params->max_out_time = 200; | |
326 | ||
ef67f18d AB |
327 | not_bound: |
328 | ||
50df8a30 | 329 | for (band = IEEE80211_BAND_2GHZ; band < IEEE80211_NUM_BANDS; band++) { |
2ce89cd6 DS |
330 | if (params->passive_fragmented) |
331 | params->dwell[band].passive = frag_passive_dwell; | |
332 | else | |
333 | params->dwell[band].passive = | |
334 | iwl_mvm_get_passive_dwell(band); | |
50df8a30 AB |
335 | params->dwell[band].active = iwl_mvm_get_active_dwell(band, |
336 | n_ssids); | |
337 | } | |
61f6325d HD |
338 | } |
339 | ||
8ca151b5 JB |
340 | int iwl_mvm_scan_request(struct iwl_mvm *mvm, |
341 | struct ieee80211_vif *vif, | |
342 | struct cfg80211_scan_request *req) | |
343 | { | |
344 | struct iwl_host_cmd hcmd = { | |
345 | .id = SCAN_REQUEST_CMD, | |
346 | .len = { 0, }, | |
347 | .data = { mvm->scan_cmd, }, | |
8ca151b5 JB |
348 | .dataflags = { IWL_HCMD_DFL_NOCOPY, }, |
349 | }; | |
350 | struct iwl_scan_cmd *cmd = mvm->scan_cmd; | |
351 | int ret; | |
352 | u32 status; | |
353 | int ssid_len = 0; | |
354 | u8 *ssid = NULL; | |
20f1a5de DS |
355 | bool basic_ssid = !(mvm->fw->ucode_capa.flags & |
356 | IWL_UCODE_TLV_FLAGS_NO_BASIC_SSID); | |
8a110d9b | 357 | struct iwl_mvm_scan_params params = {}; |
8ca151b5 JB |
358 | |
359 | lockdep_assert_held(&mvm->mutex); | |
748fa67c EG |
360 | |
361 | /* we should have failed registration if scan_cmd was NULL */ | |
362 | if (WARN_ON(mvm->scan_cmd == NULL)) | |
363 | return -ENOMEM; | |
8ca151b5 JB |
364 | |
365 | IWL_DEBUG_SCAN(mvm, "Handling mac80211 scan request\n"); | |
366 | mvm->scan_status = IWL_MVM_SCAN_OS; | |
0564679b | 367 | memset(cmd, 0, ksize(cmd)); |
8a110d9b | 368 | |
8ca151b5 JB |
369 | cmd->channel_count = (u8)req->n_channels; |
370 | cmd->quiet_time = cpu_to_le16(IWL_ACTIVE_QUIET_TIME); | |
371 | cmd->quiet_plcp_th = cpu_to_le16(IWL_PLCP_QUIET_THRESH); | |
372 | cmd->rxchain_sel_flags = iwl_mvm_scan_rx_chain(mvm); | |
8a110d9b | 373 | |
ab480030 | 374 | iwl_mvm_scan_calc_params(mvm, vif, req->n_ssids, req->flags, ¶ms); |
8a110d9b AB |
375 | cmd->max_out_time = cpu_to_le32(params.max_out_time); |
376 | cmd->suspend_time = cpu_to_le32(params.suspend_time); | |
50df8a30 AB |
377 | if (params.passive_fragmented) |
378 | cmd->scan_flags |= SCAN_FLAGS_FRAGMENTED_SCAN; | |
8a110d9b | 379 | |
fb98be5e | 380 | cmd->rxon_flags = iwl_mvm_scan_rxon_flags(req->channels[0]->band); |
8ca151b5 JB |
381 | cmd->filter_flags = cpu_to_le32(MAC_FILTER_ACCEPT_GRP | |
382 | MAC_FILTER_IN_BEACON); | |
d91b06d2 IP |
383 | |
384 | if (vif->type == NL80211_IFTYPE_P2P_DEVICE) | |
385 | cmd->type = cpu_to_le32(SCAN_TYPE_DISCOVERY_FORCED); | |
386 | else | |
387 | cmd->type = cpu_to_le32(SCAN_TYPE_FORCED); | |
388 | ||
8ca151b5 JB |
389 | cmd->repeats = cpu_to_le32(1); |
390 | ||
391 | /* | |
392 | * If the user asked for passive scan, don't change to active scan if | |
393 | * you see any activity on the channel - remain passive. | |
394 | */ | |
395 | if (req->n_ssids > 0) { | |
396 | cmd->passive2active = cpu_to_le16(1); | |
26e05cc3 | 397 | cmd->scan_flags |= SCAN_FLAGS_PASSIVE2ACTIVE; |
20f1a5de DS |
398 | if (basic_ssid) { |
399 | ssid = req->ssids[0].ssid; | |
400 | ssid_len = req->ssids[0].ssid_len; | |
401 | } | |
8ca151b5 JB |
402 | } else { |
403 | cmd->passive2active = 0; | |
26e05cc3 | 404 | cmd->scan_flags &= ~SCAN_FLAGS_PASSIVE2ACTIVE; |
8ca151b5 JB |
405 | } |
406 | ||
fb98be5e DS |
407 | iwl_mvm_scan_fill_ssids(cmd->direct_scan, req->ssids, req->n_ssids, |
408 | basic_ssid ? 1 : 0); | |
8ca151b5 | 409 | |
8e2a866e EG |
410 | cmd->tx_cmd.tx_flags = cpu_to_le32(TX_CMD_FLG_SEQ_CTL | |
411 | TX_CMD_FLG_BT_DIS); | |
8ca151b5 JB |
412 | cmd->tx_cmd.sta_id = mvm->aux_sta.sta_id; |
413 | cmd->tx_cmd.life_time = cpu_to_le32(TX_CMD_LIFE_TIME_INFINITE); | |
414 | cmd->tx_cmd.rate_n_flags = | |
415 | iwl_mvm_scan_rate_n_flags(mvm, req->channels[0]->band, | |
416 | req->no_cck); | |
417 | ||
418 | cmd->tx_cmd.len = | |
419 | cpu_to_le16(iwl_mvm_fill_probe_req( | |
420 | (struct ieee80211_mgmt *)cmd->data, | |
421 | vif->addr, | |
422 | req->n_ssids, ssid, ssid_len, | |
633e2713 | 423 | req->ie, req->ie_len, NULL, 0, |
8ca151b5 JB |
424 | mvm->fw->ucode_capa.max_probe_length)); |
425 | ||
50df8a30 | 426 | iwl_mvm_scan_fill_channels(cmd, req, basic_ssid, ¶ms); |
8ca151b5 JB |
427 | |
428 | cmd->len = cpu_to_le16(sizeof(struct iwl_scan_cmd) + | |
429 | le16_to_cpu(cmd->tx_cmd.len) + | |
430 | (cmd->channel_count * sizeof(struct iwl_scan_channel))); | |
431 | hcmd.len[0] = le16_to_cpu(cmd->len); | |
432 | ||
433 | status = SCAN_RESPONSE_OK; | |
434 | ret = iwl_mvm_send_cmd_status(mvm, &hcmd, &status); | |
435 | if (!ret && status == SCAN_RESPONSE_OK) { | |
436 | IWL_DEBUG_SCAN(mvm, "Scan request was sent successfully\n"); | |
437 | } else { | |
438 | /* | |
439 | * If the scan failed, it usually means that the FW was unable | |
440 | * to allocate the time events. Warn on it, but maybe we | |
441 | * should try to send the command again with different params. | |
442 | */ | |
443 | IWL_ERR(mvm, "Scan failed! status 0x%x ret %d\n", | |
444 | status, ret); | |
445 | mvm->scan_status = IWL_MVM_SCAN_NONE; | |
446 | ret = -EIO; | |
447 | } | |
448 | return ret; | |
449 | } | |
450 | ||
451 | int iwl_mvm_rx_scan_response(struct iwl_mvm *mvm, struct iwl_rx_cmd_buffer *rxb, | |
452 | struct iwl_device_cmd *cmd) | |
453 | { | |
454 | struct iwl_rx_packet *pkt = rxb_addr(rxb); | |
455 | struct iwl_cmd_response *resp = (void *)pkt->data; | |
456 | ||
457 | IWL_DEBUG_SCAN(mvm, "Scan response received. status 0x%x\n", | |
458 | le32_to_cpu(resp->status)); | |
459 | return 0; | |
460 | } | |
461 | ||
462 | int iwl_mvm_rx_scan_complete(struct iwl_mvm *mvm, struct iwl_rx_cmd_buffer *rxb, | |
463 | struct iwl_device_cmd *cmd) | |
464 | { | |
465 | struct iwl_rx_packet *pkt = rxb_addr(rxb); | |
466 | struct iwl_scan_complete_notif *notif = (void *)pkt->data; | |
467 | ||
91b80256 AN |
468 | lockdep_assert_held(&mvm->mutex); |
469 | ||
8ca151b5 JB |
470 | IWL_DEBUG_SCAN(mvm, "Scan complete: status=0x%x scanned channels=%d\n", |
471 | notif->status, notif->scanned_channels); | |
472 | ||
91b80256 AN |
473 | if (mvm->scan_status == IWL_MVM_SCAN_OS) |
474 | mvm->scan_status = IWL_MVM_SCAN_NONE; | |
8ca151b5 JB |
475 | ieee80211_scan_completed(mvm->hw, notif->status != SCAN_COMP_STATUS_OK); |
476 | ||
519e2026 AN |
477 | iwl_mvm_unref(mvm, IWL_MVM_REF_SCAN); |
478 | ||
8ca151b5 JB |
479 | return 0; |
480 | } | |
481 | ||
fb98be5e DS |
482 | int iwl_mvm_rx_scan_offload_results(struct iwl_mvm *mvm, |
483 | struct iwl_rx_cmd_buffer *rxb, | |
484 | struct iwl_device_cmd *cmd) | |
35a000b7 DS |
485 | { |
486 | struct iwl_rx_packet *pkt = rxb_addr(rxb); | |
fb98be5e DS |
487 | u8 client_bitmap = 0; |
488 | ||
489 | if (!(mvm->fw->ucode_capa.api[0] & IWL_UCODE_TLV_API_LMAC_SCAN)) { | |
490 | struct iwl_sched_scan_results *notif = (void *)pkt->data; | |
35a000b7 | 491 | |
fb98be5e DS |
492 | client_bitmap = notif->client_bitmap; |
493 | } | |
494 | ||
495 | if (mvm->fw->ucode_capa.api[0] & IWL_UCODE_TLV_API_LMAC_SCAN || | |
496 | client_bitmap & SCAN_CLIENT_SCHED_SCAN) { | |
497 | if (mvm->scan_status == IWL_MVM_SCAN_SCHED) { | |
498 | IWL_DEBUG_SCAN(mvm, "Scheduled scan results\n"); | |
499 | ieee80211_sched_scan_results(mvm->hw); | |
500 | } else { | |
501 | IWL_DEBUG_SCAN(mvm, "Scan results\n"); | |
502 | } | |
35a000b7 DS |
503 | } |
504 | ||
505 | return 0; | |
506 | } | |
507 | ||
8ca151b5 JB |
508 | static bool iwl_mvm_scan_abort_notif(struct iwl_notif_wait_data *notif_wait, |
509 | struct iwl_rx_packet *pkt, void *data) | |
510 | { | |
511 | struct iwl_mvm *mvm = | |
512 | container_of(notif_wait, struct iwl_mvm, notif_wait); | |
513 | struct iwl_scan_complete_notif *notif; | |
514 | u32 *resp; | |
515 | ||
516 | switch (pkt->hdr.cmd) { | |
517 | case SCAN_ABORT_CMD: | |
518 | resp = (void *)pkt->data; | |
519 | if (*resp == CAN_ABORT_STATUS) { | |
520 | IWL_DEBUG_SCAN(mvm, | |
521 | "Scan can be aborted, wait until completion\n"); | |
522 | return false; | |
523 | } | |
524 | ||
5a3e9f7f EG |
525 | /* |
526 | * If scan cannot be aborted, it means that we had a | |
527 | * SCAN_COMPLETE_NOTIFICATION in the pipe and it called | |
528 | * ieee80211_scan_completed already. | |
529 | */ | |
8ca151b5 JB |
530 | IWL_DEBUG_SCAN(mvm, "Scan cannot be aborted, exit now: %d\n", |
531 | *resp); | |
532 | return true; | |
533 | ||
534 | case SCAN_COMPLETE_NOTIFICATION: | |
535 | notif = (void *)pkt->data; | |
536 | IWL_DEBUG_SCAN(mvm, "Scan aborted: status 0x%x\n", | |
537 | notif->status); | |
538 | return true; | |
539 | ||
540 | default: | |
541 | WARN_ON(1); | |
542 | return false; | |
543 | }; | |
544 | } | |
545 | ||
fb98be5e | 546 | static int iwl_mvm_cancel_regular_scan(struct iwl_mvm *mvm) |
8ca151b5 JB |
547 | { |
548 | struct iwl_notification_wait wait_scan_abort; | |
549 | static const u8 scan_abort_notif[] = { SCAN_ABORT_CMD, | |
550 | SCAN_COMPLETE_NOTIFICATION }; | |
551 | int ret; | |
552 | ||
5a3e9f7f | 553 | if (mvm->scan_status == IWL_MVM_SCAN_NONE) |
91b80256 | 554 | return 0; |
5a3e9f7f | 555 | |
aaa4e741 EG |
556 | if (iwl_mvm_is_radio_killed(mvm)) { |
557 | ieee80211_scan_completed(mvm->hw, true); | |
519e2026 | 558 | iwl_mvm_unref(mvm, IWL_MVM_REF_SCAN); |
aaa4e741 | 559 | mvm->scan_status = IWL_MVM_SCAN_NONE; |
91b80256 | 560 | return 0; |
aaa4e741 EG |
561 | } |
562 | ||
8ca151b5 JB |
563 | iwl_init_notification_wait(&mvm->notif_wait, &wait_scan_abort, |
564 | scan_abort_notif, | |
565 | ARRAY_SIZE(scan_abort_notif), | |
566 | iwl_mvm_scan_abort_notif, NULL); | |
567 | ||
a1022927 | 568 | ret = iwl_mvm_send_cmd_pdu(mvm, SCAN_ABORT_CMD, 0, 0, NULL); |
8ca151b5 JB |
569 | if (ret) { |
570 | IWL_ERR(mvm, "Couldn't send SCAN_ABORT_CMD: %d\n", ret); | |
992f81fc | 571 | /* mac80211's state will be cleaned in the nic_restart flow */ |
8ca151b5 JB |
572 | goto out_remove_notif; |
573 | } | |
574 | ||
91b80256 | 575 | return iwl_wait_notification(&mvm->notif_wait, &wait_scan_abort, HZ); |
8ca151b5 JB |
576 | |
577 | out_remove_notif: | |
578 | iwl_remove_notification(&mvm->notif_wait, &wait_scan_abort); | |
91b80256 | 579 | return ret; |
8ca151b5 | 580 | } |
35a000b7 DS |
581 | |
582 | int iwl_mvm_rx_scan_offload_complete_notif(struct iwl_mvm *mvm, | |
583 | struct iwl_rx_cmd_buffer *rxb, | |
584 | struct iwl_device_cmd *cmd) | |
585 | { | |
586 | struct iwl_rx_packet *pkt = rxb_addr(rxb); | |
fb98be5e DS |
587 | u8 status, ebs_status; |
588 | ||
589 | if (mvm->fw->ucode_capa.api[0] & IWL_UCODE_TLV_API_LMAC_SCAN) { | |
590 | struct iwl_periodic_scan_complete *scan_notif; | |
35a000b7 | 591 | |
fb98be5e DS |
592 | scan_notif = (void *)pkt->data; |
593 | status = scan_notif->status; | |
594 | ebs_status = scan_notif->ebs_status; | |
595 | } else { | |
596 | struct iwl_scan_offload_complete *scan_notif; | |
597 | ||
598 | scan_notif = (void *)pkt->data; | |
599 | status = scan_notif->status; | |
600 | ebs_status = scan_notif->ebs_status; | |
601 | } | |
a6623e84 JB |
602 | /* scan status must be locked for proper checking */ |
603 | lockdep_assert_held(&mvm->mutex); | |
604 | ||
e820c2da | 605 | IWL_DEBUG_SCAN(mvm, |
fb98be5e DS |
606 | "%s completed, status %s, EBS status %s\n", |
607 | mvm->scan_status == IWL_MVM_SCAN_SCHED ? | |
608 | "Scheduled scan" : "Scan", | |
609 | status == IWL_SCAN_OFFLOAD_COMPLETED ? | |
610 | "completed" : "aborted", | |
611 | ebs_status == IWL_SCAN_EBS_SUCCESS ? | |
612 | "success" : "failed"); | |
e820c2da | 613 | |
35a000b7 | 614 | |
33ea27f6 AN |
615 | /* only call mac80211 completion if the stop was initiated by FW */ |
616 | if (mvm->scan_status == IWL_MVM_SCAN_SCHED) { | |
a6623e84 | 617 | mvm->scan_status = IWL_MVM_SCAN_NONE; |
33ea27f6 | 618 | ieee80211_sched_scan_stopped(mvm->hw); |
fb98be5e DS |
619 | } else if (mvm->scan_status == IWL_MVM_SCAN_OS) { |
620 | mvm->scan_status = IWL_MVM_SCAN_NONE; | |
621 | ieee80211_scan_completed(mvm->hw, | |
622 | status == IWL_SCAN_OFFLOAD_ABORTED); | |
33ea27f6 | 623 | } |
35a000b7 | 624 | |
fb98be5e | 625 | mvm->last_ebs_successful = !ebs_status; |
e820c2da | 626 | |
35a000b7 DS |
627 | return 0; |
628 | } | |
629 | ||
630 | static void iwl_scan_offload_build_tx_cmd(struct iwl_mvm *mvm, | |
631 | struct ieee80211_vif *vif, | |
633e2713 | 632 | struct ieee80211_scan_ies *ies, |
35a000b7 DS |
633 | enum ieee80211_band band, |
634 | struct iwl_tx_cmd *cmd, | |
635 | u8 *data) | |
636 | { | |
637 | u16 cmd_len; | |
638 | ||
639 | cmd->tx_flags = cpu_to_le32(TX_CMD_FLG_SEQ_CTL); | |
640 | cmd->life_time = cpu_to_le32(TX_CMD_LIFE_TIME_INFINITE); | |
641 | cmd->sta_id = mvm->aux_sta.sta_id; | |
642 | ||
643 | cmd->rate_n_flags = iwl_mvm_scan_rate_n_flags(mvm, band, false); | |
644 | ||
645 | cmd_len = iwl_mvm_fill_probe_req((struct ieee80211_mgmt *)data, | |
646 | vif->addr, | |
647 | 1, NULL, 0, | |
633e2713 DS |
648 | ies->ies[band], ies->len[band], |
649 | ies->common_ies, ies->common_ie_len, | |
35a000b7 DS |
650 | SCAN_OFFLOAD_PROBE_REQ_SIZE); |
651 | cmd->len = cpu_to_le16(cmd_len); | |
652 | } | |
653 | ||
654 | static void iwl_build_scan_cmd(struct iwl_mvm *mvm, | |
655 | struct ieee80211_vif *vif, | |
656 | struct cfg80211_sched_scan_request *req, | |
50df8a30 AB |
657 | struct iwl_scan_offload_cmd *scan, |
658 | struct iwl_mvm_scan_params *params) | |
35a000b7 | 659 | { |
89879413 | 660 | scan->channel_count = req->n_channels; |
35a000b7 DS |
661 | scan->quiet_time = cpu_to_le16(IWL_ACTIVE_QUIET_TIME); |
662 | scan->quiet_plcp_th = cpu_to_le16(IWL_PLCP_QUIET_THRESH); | |
663 | scan->good_CRC_th = IWL_GOOD_CRC_TH_DEFAULT; | |
664 | scan->rx_chain = iwl_mvm_scan_rx_chain(mvm); | |
8a110d9b | 665 | |
50df8a30 AB |
666 | scan->max_out_time = cpu_to_le32(params->max_out_time); |
667 | scan->suspend_time = cpu_to_le32(params->suspend_time); | |
8a110d9b | 668 | |
35a000b7 DS |
669 | scan->filter_flags |= cpu_to_le32(MAC_FILTER_ACCEPT_GRP | |
670 | MAC_FILTER_IN_BEACON); | |
671 | scan->scan_type = cpu_to_le32(SCAN_TYPE_BACKGROUND); | |
672 | scan->rep_count = cpu_to_le32(1); | |
50df8a30 AB |
673 | |
674 | if (params->passive_fragmented) | |
675 | scan->scan_flags |= SCAN_FLAGS_FRAGMENTED_SCAN; | |
35a000b7 DS |
676 | } |
677 | ||
678 | static int iwl_ssid_exist(u8 *ssid, u8 ssid_len, struct iwl_ssid_ie *ssid_list) | |
679 | { | |
680 | int i; | |
681 | ||
682 | for (i = 0; i < PROBE_OPTION_MAX; i++) { | |
683 | if (!ssid_list[i].len) | |
684 | break; | |
685 | if (ssid_list[i].len == ssid_len && | |
686 | !memcmp(ssid_list->ssid, ssid, ssid_len)) | |
687 | return i; | |
688 | } | |
689 | return -1; | |
690 | } | |
691 | ||
692 | static void iwl_scan_offload_build_ssid(struct cfg80211_sched_scan_request *req, | |
fb98be5e DS |
693 | struct iwl_ssid_ie *direct_scan, |
694 | u32 *ssid_bitmap, bool basic_ssid) | |
35a000b7 DS |
695 | { |
696 | int i, j; | |
697 | int index; | |
698 | ||
699 | /* | |
700 | * copy SSIDs from match list. | |
701 | * iwl_config_sched_scan_profiles() uses the order of these ssids to | |
702 | * config match list. | |
703 | */ | |
704 | for (i = 0; i < req->n_match_sets && i < PROBE_OPTION_MAX; i++) { | |
ea73cbce JB |
705 | /* skip empty SSID matchsets */ |
706 | if (!req->match_sets[i].ssid.ssid_len) | |
707 | continue; | |
fb98be5e DS |
708 | direct_scan[i].id = WLAN_EID_SSID; |
709 | direct_scan[i].len = req->match_sets[i].ssid.ssid_len; | |
710 | memcpy(direct_scan[i].ssid, req->match_sets[i].ssid.ssid, | |
711 | direct_scan[i].len); | |
35a000b7 DS |
712 | } |
713 | ||
714 | /* add SSIDs from scan SSID list */ | |
715 | *ssid_bitmap = 0; | |
716 | for (j = 0; j < req->n_ssids && i < PROBE_OPTION_MAX; j++) { | |
717 | index = iwl_ssid_exist(req->ssids[j].ssid, | |
718 | req->ssids[j].ssid_len, | |
fb98be5e | 719 | direct_scan); |
35a000b7 | 720 | if (index < 0) { |
fb98be5e | 721 | if (!req->ssids[j].ssid_len && basic_ssid) |
35a000b7 | 722 | continue; |
fb98be5e DS |
723 | direct_scan[i].id = WLAN_EID_SSID; |
724 | direct_scan[i].len = req->ssids[j].ssid_len; | |
725 | memcpy(direct_scan[i].ssid, req->ssids[j].ssid, | |
726 | direct_scan[i].len); | |
35a000b7 DS |
727 | *ssid_bitmap |= BIT(i + 1); |
728 | i++; | |
729 | } else { | |
730 | *ssid_bitmap |= BIT(index + 1); | |
731 | } | |
732 | } | |
733 | } | |
734 | ||
735 | static void iwl_build_channel_cfg(struct iwl_mvm *mvm, | |
736 | struct cfg80211_sched_scan_request *req, | |
762533ba | 737 | u8 *channels_buffer, |
35a000b7 | 738 | enum ieee80211_band band, |
89879413 | 739 | int *head, |
50df8a30 AB |
740 | u32 ssid_bitmap, |
741 | struct iwl_mvm_scan_params *params) | |
35a000b7 | 742 | { |
762533ba DS |
743 | u32 n_channels = mvm->fw->ucode_capa.n_scan_channels; |
744 | __le32 *type = (__le32 *)channels_buffer; | |
745 | __le16 *channel_number = (__le16 *)(type + n_channels); | |
746 | __le16 *iter_count = channel_number + n_channels; | |
747 | __le32 *iter_interval = (__le32 *)(iter_count + n_channels); | |
748 | u8 *active_dwell = (u8 *)(iter_interval + n_channels); | |
749 | u8 *passive_dwell = active_dwell + n_channels; | |
89879413 | 750 | int i, index = 0; |
35a000b7 | 751 | |
89879413 EP |
752 | for (i = 0; i < req->n_channels; i++) { |
753 | struct ieee80211_channel *chan = req->channels[i]; | |
754 | ||
755 | if (chan->band != band) | |
756 | continue; | |
35a000b7 | 757 | |
89879413 EP |
758 | index = *head; |
759 | (*head)++; | |
760 | ||
762533ba DS |
761 | channel_number[index] = cpu_to_le16(chan->hw_value); |
762 | active_dwell[index] = params->dwell[band].active; | |
763 | passive_dwell[index] = params->dwell[band].passive; | |
35a000b7 | 764 | |
762533ba DS |
765 | iter_count[index] = cpu_to_le16(1); |
766 | iter_interval[index] = 0; | |
35a000b7 | 767 | |
89879413 | 768 | if (!(chan->flags & IEEE80211_CHAN_NO_IR)) |
762533ba | 769 | type[index] |= |
35a000b7 DS |
770 | cpu_to_le32(IWL_SCAN_OFFLOAD_CHANNEL_ACTIVE); |
771 | ||
762533ba DS |
772 | type[index] |= cpu_to_le32(IWL_SCAN_OFFLOAD_CHANNEL_FULL | |
773 | IWL_SCAN_OFFLOAD_CHANNEL_PARTIAL); | |
35a000b7 | 774 | |
89879413 | 775 | if (chan->flags & IEEE80211_CHAN_NO_HT40) |
762533ba | 776 | type[index] |= |
35a000b7 DS |
777 | cpu_to_le32(IWL_SCAN_OFFLOAD_CHANNEL_NARROW); |
778 | ||
779 | /* scan for all SSIDs from req->ssids */ | |
762533ba | 780 | type[index] |= cpu_to_le32(ssid_bitmap); |
35a000b7 DS |
781 | } |
782 | } | |
783 | ||
784 | int iwl_mvm_config_sched_scan(struct iwl_mvm *mvm, | |
785 | struct ieee80211_vif *vif, | |
786 | struct cfg80211_sched_scan_request *req, | |
633e2713 | 787 | struct ieee80211_scan_ies *ies) |
35a000b7 | 788 | { |
35a000b7 DS |
789 | int band_2ghz = mvm->nvm_data->bands[IEEE80211_BAND_2GHZ].n_channels; |
790 | int band_5ghz = mvm->nvm_data->bands[IEEE80211_BAND_5GHZ].n_channels; | |
791 | int head = 0; | |
35a000b7 DS |
792 | u32 ssid_bitmap; |
793 | int cmd_len; | |
794 | int ret; | |
762533ba | 795 | u8 *probes; |
fb98be5e DS |
796 | bool basic_ssid = !(mvm->fw->ucode_capa.flags & |
797 | IWL_UCODE_TLV_FLAGS_NO_BASIC_SSID); | |
35a000b7 DS |
798 | |
799 | struct iwl_scan_offload_cfg *scan_cfg; | |
800 | struct iwl_host_cmd cmd = { | |
801 | .id = SCAN_OFFLOAD_CONFIG_CMD, | |
35a000b7 | 802 | }; |
50df8a30 | 803 | struct iwl_mvm_scan_params params = {}; |
35a000b7 DS |
804 | |
805 | lockdep_assert_held(&mvm->mutex); | |
806 | ||
35a000b7 | 807 | cmd_len = sizeof(struct iwl_scan_offload_cfg) + |
762533ba | 808 | mvm->fw->ucode_capa.n_scan_channels * IWL_SCAN_CHAN_SIZE + |
66092537 | 809 | 2 * SCAN_OFFLOAD_PROBE_REQ_SIZE; |
35a000b7 DS |
810 | |
811 | scan_cfg = kzalloc(cmd_len, GFP_KERNEL); | |
812 | if (!scan_cfg) | |
813 | return -ENOMEM; | |
814 | ||
762533ba DS |
815 | probes = scan_cfg->data + |
816 | mvm->fw->ucode_capa.n_scan_channels * IWL_SCAN_CHAN_SIZE; | |
817 | ||
ab480030 | 818 | iwl_mvm_scan_calc_params(mvm, vif, req->n_ssids, 0, ¶ms); |
50df8a30 | 819 | iwl_build_scan_cmd(mvm, vif, req, &scan_cfg->scan_cmd, ¶ms); |
35a000b7 DS |
820 | scan_cfg->scan_cmd.len = cpu_to_le16(cmd_len); |
821 | ||
fb98be5e DS |
822 | iwl_scan_offload_build_ssid(req, scan_cfg->scan_cmd.direct_scan, |
823 | &ssid_bitmap, basic_ssid); | |
35a000b7 DS |
824 | /* build tx frames for supported bands */ |
825 | if (band_2ghz) { | |
826 | iwl_scan_offload_build_tx_cmd(mvm, vif, ies, | |
827 | IEEE80211_BAND_2GHZ, | |
828 | &scan_cfg->scan_cmd.tx_cmd[0], | |
762533ba DS |
829 | probes); |
830 | iwl_build_channel_cfg(mvm, req, scan_cfg->data, | |
89879413 | 831 | IEEE80211_BAND_2GHZ, &head, |
50df8a30 | 832 | ssid_bitmap, ¶ms); |
35a000b7 DS |
833 | } |
834 | if (band_5ghz) { | |
835 | iwl_scan_offload_build_tx_cmd(mvm, vif, ies, | |
836 | IEEE80211_BAND_5GHZ, | |
837 | &scan_cfg->scan_cmd.tx_cmd[1], | |
762533ba | 838 | probes + |
35a000b7 | 839 | SCAN_OFFLOAD_PROBE_REQ_SIZE); |
762533ba | 840 | iwl_build_channel_cfg(mvm, req, scan_cfg->data, |
89879413 | 841 | IEEE80211_BAND_5GHZ, &head, |
50df8a30 | 842 | ssid_bitmap, ¶ms); |
35a000b7 DS |
843 | } |
844 | ||
845 | cmd.data[0] = scan_cfg; | |
846 | cmd.len[0] = cmd_len; | |
847 | cmd.dataflags[0] = IWL_HCMD_DFL_NOCOPY; | |
848 | ||
849 | IWL_DEBUG_SCAN(mvm, "Sending scheduled scan config\n"); | |
850 | ||
851 | ret = iwl_mvm_send_cmd(mvm, &cmd); | |
852 | kfree(scan_cfg); | |
853 | return ret; | |
854 | } | |
855 | ||
856 | int iwl_mvm_config_sched_scan_profiles(struct iwl_mvm *mvm, | |
857 | struct cfg80211_sched_scan_request *req) | |
858 | { | |
859 | struct iwl_scan_offload_profile *profile; | |
860 | struct iwl_scan_offload_profile_cfg *profile_cfg; | |
861 | struct iwl_scan_offload_blacklist *blacklist; | |
862 | struct iwl_host_cmd cmd = { | |
863 | .id = SCAN_OFFLOAD_UPDATE_PROFILES_CMD, | |
35a000b7 DS |
864 | .len[1] = sizeof(*profile_cfg), |
865 | .dataflags[0] = IWL_HCMD_DFL_NOCOPY, | |
866 | .dataflags[1] = IWL_HCMD_DFL_NOCOPY, | |
867 | }; | |
868 | int blacklist_len; | |
869 | int i; | |
870 | int ret; | |
871 | ||
872 | if (WARN_ON(req->n_match_sets > IWL_SCAN_MAX_PROFILES)) | |
873 | return -EIO; | |
874 | ||
875 | if (mvm->fw->ucode_capa.flags & IWL_UCODE_TLV_FLAGS_SHORT_BL) | |
876 | blacklist_len = IWL_SCAN_SHORT_BLACKLIST_LEN; | |
877 | else | |
878 | blacklist_len = IWL_SCAN_MAX_BLACKLIST_LEN; | |
879 | ||
880 | blacklist = kzalloc(sizeof(*blacklist) * blacklist_len, GFP_KERNEL); | |
881 | if (!blacklist) | |
882 | return -ENOMEM; | |
883 | ||
884 | profile_cfg = kzalloc(sizeof(*profile_cfg), GFP_KERNEL); | |
885 | if (!profile_cfg) { | |
886 | ret = -ENOMEM; | |
887 | goto free_blacklist; | |
888 | } | |
889 | ||
890 | cmd.data[0] = blacklist; | |
891 | cmd.len[0] = sizeof(*blacklist) * blacklist_len; | |
892 | cmd.data[1] = profile_cfg; | |
893 | ||
894 | /* No blacklist configuration */ | |
895 | ||
896 | profile_cfg->num_profiles = req->n_match_sets; | |
897 | profile_cfg->active_clients = SCAN_CLIENT_SCHED_SCAN; | |
898 | profile_cfg->pass_match = SCAN_CLIENT_SCHED_SCAN; | |
899 | profile_cfg->match_notify = SCAN_CLIENT_SCHED_SCAN; | |
6e0bbe5e DS |
900 | if (!req->n_match_sets || !req->match_sets[0].ssid.ssid_len) |
901 | profile_cfg->any_beacon_notify = SCAN_CLIENT_SCHED_SCAN; | |
35a000b7 DS |
902 | |
903 | for (i = 0; i < req->n_match_sets; i++) { | |
904 | profile = &profile_cfg->profiles[i]; | |
905 | profile->ssid_index = i; | |
906 | /* Support any cipher and auth algorithm */ | |
907 | profile->unicast_cipher = 0xff; | |
908 | profile->auth_alg = 0xff; | |
909 | profile->network_type = IWL_NETWORK_TYPE_ANY; | |
910 | profile->band_selection = IWL_SCAN_OFFLOAD_SELECT_ANY; | |
911 | profile->client_bitmap = SCAN_CLIENT_SCHED_SCAN; | |
912 | } | |
913 | ||
914 | IWL_DEBUG_SCAN(mvm, "Sending scheduled scan profile config\n"); | |
915 | ||
916 | ret = iwl_mvm_send_cmd(mvm, &cmd); | |
917 | kfree(profile_cfg); | |
918 | free_blacklist: | |
919 | kfree(blacklist); | |
920 | ||
921 | return ret; | |
922 | } | |
923 | ||
924 | int iwl_mvm_sched_scan_start(struct iwl_mvm *mvm, | |
925 | struct cfg80211_sched_scan_request *req) | |
926 | { | |
927 | struct iwl_scan_offload_req scan_req = { | |
928 | .watchdog = IWL_SCHED_SCAN_WATCHDOG, | |
929 | ||
930 | .schedule_line[0].iterations = IWL_FAST_SCHED_SCAN_ITERATIONS, | |
b14fc2be | 931 | .schedule_line[0].delay = cpu_to_le16(req->interval / 1000), |
35a000b7 DS |
932 | .schedule_line[0].full_scan_mul = 1, |
933 | ||
934 | .schedule_line[1].iterations = 0xff, | |
b14fc2be | 935 | .schedule_line[1].delay = cpu_to_le16(req->interval / 1000), |
35a000b7 DS |
936 | .schedule_line[1].full_scan_mul = IWL_FULL_SCAN_MULTIPLIER, |
937 | }; | |
938 | ||
939 | if (req->n_match_sets && req->match_sets[0].ssid.ssid_len) { | |
940 | IWL_DEBUG_SCAN(mvm, | |
941 | "Sending scheduled scan with filtering, filter len %d\n", | |
942 | req->n_match_sets); | |
35a000b7 DS |
943 | } else { |
944 | IWL_DEBUG_SCAN(mvm, | |
945 | "Sending Scheduled scan without filtering\n"); | |
de33fb5e | 946 | scan_req.flags |= cpu_to_le16(IWL_SCAN_OFFLOAD_FLAG_PASS_ALL); |
35a000b7 DS |
947 | } |
948 | ||
e820c2da HD |
949 | if (mvm->last_ebs_successful && |
950 | mvm->fw->ucode_capa.flags & IWL_UCODE_TLV_FLAGS_EBS_SUPPORT) | |
951 | scan_req.flags |= | |
952 | cpu_to_le16(IWL_SCAN_OFFLOAD_FLAG_EBS_ACCURATE_MODE); | |
953 | ||
a1022927 | 954 | return iwl_mvm_send_cmd_pdu(mvm, SCAN_OFFLOAD_REQUEST_CMD, 0, |
35a000b7 DS |
955 | sizeof(scan_req), &scan_req); |
956 | } | |
957 | ||
fb98be5e | 958 | static int iwl_mvm_send_scan_offload_abort(struct iwl_mvm *mvm) |
35a000b7 DS |
959 | { |
960 | int ret; | |
961 | struct iwl_host_cmd cmd = { | |
962 | .id = SCAN_OFFLOAD_ABORT_CMD, | |
35a000b7 DS |
963 | }; |
964 | u32 status; | |
965 | ||
966 | /* Exit instantly with error when device is not ready | |
967 | * to receive scan abort command or it does not perform | |
968 | * scheduled scan currently */ | |
fb98be5e DS |
969 | if (mvm->scan_status != IWL_MVM_SCAN_SCHED && |
970 | (!(mvm->fw->ucode_capa.api[0] & IWL_UCODE_TLV_API_LMAC_SCAN) || | |
971 | mvm->scan_status != IWL_MVM_SCAN_OS)) | |
35a000b7 DS |
972 | return -EIO; |
973 | ||
974 | ret = iwl_mvm_send_cmd_status(mvm, &cmd, &status); | |
975 | if (ret) | |
976 | return ret; | |
977 | ||
978 | if (status != CAN_ABORT_STATUS) { | |
979 | /* | |
980 | * The scan abort will return 1 for success or | |
981 | * 2 for "failure". A failure condition can be | |
982 | * due to simply not being in an active scan which | |
983 | * can occur if we send the scan abort before the | |
984 | * microcode has notified us that a scan is completed. | |
985 | */ | |
986 | IWL_DEBUG_SCAN(mvm, "SCAN OFFLOAD ABORT ret %d.\n", status); | |
33ea27f6 | 987 | ret = -ENOENT; |
35a000b7 DS |
988 | } |
989 | ||
990 | return ret; | |
991 | } | |
992 | ||
fb98be5e | 993 | int iwl_mvm_scan_offload_stop(struct iwl_mvm *mvm, bool notify) |
35a000b7 DS |
994 | { |
995 | int ret; | |
33ea27f6 AN |
996 | struct iwl_notification_wait wait_scan_done; |
997 | static const u8 scan_done_notif[] = { SCAN_OFFLOAD_COMPLETE, }; | |
fb98be5e | 998 | bool sched = mvm->scan_status == IWL_MVM_SCAN_SCHED; |
35a000b7 DS |
999 | |
1000 | lockdep_assert_held(&mvm->mutex); | |
1001 | ||
fb98be5e DS |
1002 | if (mvm->scan_status != IWL_MVM_SCAN_SCHED && |
1003 | (!(mvm->fw->ucode_capa.api[0] & IWL_UCODE_TLV_API_LMAC_SCAN) || | |
1004 | mvm->scan_status != IWL_MVM_SCAN_OS)) { | |
1005 | IWL_DEBUG_SCAN(mvm, "No scan to stop\n"); | |
33ea27f6 | 1006 | return 0; |
35a000b7 DS |
1007 | } |
1008 | ||
33ea27f6 AN |
1009 | iwl_init_notification_wait(&mvm->notif_wait, &wait_scan_done, |
1010 | scan_done_notif, | |
1011 | ARRAY_SIZE(scan_done_notif), | |
1012 | NULL, NULL); | |
1013 | ||
fb98be5e | 1014 | ret = iwl_mvm_send_scan_offload_abort(mvm); |
33ea27f6 | 1015 | if (ret) { |
fb98be5e DS |
1016 | IWL_DEBUG_SCAN(mvm, "Send stop %sscan failed %d\n", |
1017 | sched ? "offloaded " : "", ret); | |
33ea27f6 AN |
1018 | iwl_remove_notification(&mvm->notif_wait, &wait_scan_done); |
1019 | return ret; | |
1020 | } | |
1021 | ||
fb98be5e DS |
1022 | IWL_DEBUG_SCAN(mvm, "Successfully sent stop %sscan\n", |
1023 | sched ? "offloaded " : ""); | |
33ea27f6 AN |
1024 | |
1025 | ret = iwl_wait_notification(&mvm->notif_wait, &wait_scan_done, 1 * HZ); | |
1026 | if (ret) | |
1027 | return ret; | |
1028 | ||
1029 | /* | |
1030 | * Clear the scan status so the next scan requests will succeed. This | |
1031 | * also ensures the Rx handler doesn't do anything, as the scan was | |
1032 | * stopped from above. | |
1033 | */ | |
1034 | mvm->scan_status = IWL_MVM_SCAN_NONE; | |
1035 | ||
fb98be5e DS |
1036 | if (notify) { |
1037 | if (sched) | |
1038 | ieee80211_sched_scan_stopped(mvm->hw); | |
1039 | else | |
1040 | ieee80211_scan_completed(mvm->hw, true); | |
1041 | } | |
636a2cdc | 1042 | |
33ea27f6 | 1043 | return 0; |
35a000b7 | 1044 | } |
fb98be5e DS |
1045 | |
1046 | static void iwl_mvm_unified_scan_fill_tx_cmd(struct iwl_mvm *mvm, | |
1047 | struct iwl_scan_req_tx_cmd *tx_cmd, | |
1048 | bool no_cck) | |
1049 | { | |
1050 | tx_cmd[0].tx_flags = cpu_to_le32(TX_CMD_FLG_SEQ_CTL | | |
1051 | TX_CMD_FLG_BT_DIS); | |
1052 | tx_cmd[0].rate_n_flags = iwl_mvm_scan_rate_n_flags(mvm, | |
1053 | IEEE80211_BAND_2GHZ, | |
1054 | no_cck); | |
1055 | tx_cmd[0].sta_id = mvm->aux_sta.sta_id; | |
1056 | ||
1057 | tx_cmd[1].tx_flags = cpu_to_le32(TX_CMD_FLG_SEQ_CTL | | |
1058 | TX_CMD_FLG_BT_DIS); | |
1059 | tx_cmd[1].rate_n_flags = iwl_mvm_scan_rate_n_flags(mvm, | |
1060 | IEEE80211_BAND_5GHZ, | |
1061 | no_cck); | |
1062 | tx_cmd[1].sta_id = mvm->aux_sta.sta_id; | |
1063 | } | |
1064 | ||
1065 | static void | |
1066 | iwl_mvm_lmac_scan_cfg_channels(struct iwl_mvm *mvm, | |
1067 | struct ieee80211_channel **channels, | |
1068 | int n_channels, u32 ssid_bitmap, | |
1069 | struct iwl_scan_req_unified_lmac *cmd) | |
1070 | { | |
1071 | struct iwl_scan_channel_cfg_lmac *channel_cfg = (void *)&cmd->data; | |
1072 | int i; | |
1073 | ||
1074 | for (i = 0; i < n_channels; i++) { | |
1075 | channel_cfg[i].channel_num = | |
1076 | cpu_to_le16(channels[i]->hw_value); | |
1077 | channel_cfg[i].iter_count = cpu_to_le16(1); | |
1078 | channel_cfg[i].iter_interval = 0; | |
1079 | channel_cfg[i].flags = | |
1080 | cpu_to_le32(IWL_UNIFIED_SCAN_CHANNEL_PARTIAL | | |
1081 | ssid_bitmap); | |
1082 | } | |
1083 | } | |
1084 | ||
1085 | static void | |
1086 | iwl_mvm_build_unified_scan_probe(struct iwl_mvm *mvm, struct ieee80211_vif *vif, | |
1087 | struct ieee80211_scan_ies *ies, | |
1088 | struct iwl_scan_req_unified_lmac *cmd) | |
1089 | { | |
1090 | struct iwl_scan_probe_req *preq = (void *)(cmd->data + | |
1091 | sizeof(struct iwl_scan_channel_cfg_lmac) * | |
1092 | mvm->fw->ucode_capa.n_scan_channels); | |
1093 | struct ieee80211_mgmt *frame = (struct ieee80211_mgmt *)preq->buf; | |
1094 | u8 *pos; | |
1095 | ||
1096 | frame->frame_control = cpu_to_le16(IEEE80211_STYPE_PROBE_REQ); | |
1097 | eth_broadcast_addr(frame->da); | |
1098 | memcpy(frame->sa, vif->addr, ETH_ALEN); | |
1099 | eth_broadcast_addr(frame->bssid); | |
1100 | frame->seq_ctrl = 0; | |
1101 | ||
1102 | pos = frame->u.probe_req.variable; | |
1103 | *pos++ = WLAN_EID_SSID; | |
1104 | *pos++ = 0; | |
1105 | ||
1106 | preq->mac_header.offset = 0; | |
1107 | preq->mac_header.len = cpu_to_le16(24 + 2); | |
1108 | ||
1109 | memcpy(pos, ies->ies[IEEE80211_BAND_2GHZ], | |
1110 | ies->len[IEEE80211_BAND_2GHZ]); | |
1111 | preq->band_data[0].offset = cpu_to_le16(pos - preq->buf); | |
1112 | preq->band_data[0].len = cpu_to_le16(ies->len[IEEE80211_BAND_2GHZ]); | |
1113 | pos += ies->len[IEEE80211_BAND_2GHZ]; | |
1114 | ||
1115 | memcpy(pos, ies->ies[IEEE80211_BAND_5GHZ], | |
1116 | ies->len[IEEE80211_BAND_5GHZ]); | |
1117 | preq->band_data[1].offset = cpu_to_le16(pos - preq->buf); | |
1118 | preq->band_data[1].len = cpu_to_le16(ies->len[IEEE80211_BAND_5GHZ]); | |
1119 | pos += ies->len[IEEE80211_BAND_5GHZ]; | |
1120 | ||
1121 | memcpy(pos, ies->common_ies, ies->common_ie_len); | |
1122 | preq->common_data.offset = cpu_to_le16(pos - preq->buf); | |
1123 | preq->common_data.len = cpu_to_le16(ies->common_ie_len); | |
1124 | } | |
1125 | ||
1126 | static void | |
1127 | iwl_mvm_build_generic_unified_scan_cmd(struct iwl_mvm *mvm, | |
1128 | struct iwl_scan_req_unified_lmac *cmd, | |
1129 | struct iwl_mvm_scan_params *params) | |
1130 | { | |
af91344c | 1131 | memset(cmd, 0, ksize(cmd)); |
2ce89cd6 DS |
1132 | cmd->active_dwell = params->dwell[IEEE80211_BAND_2GHZ].active; |
1133 | cmd->passive_dwell = params->dwell[IEEE80211_BAND_2GHZ].passive; | |
1134 | if (params->passive_fragmented) | |
1135 | cmd->fragmented_dwell = | |
1136 | params->dwell[IEEE80211_BAND_2GHZ].passive; | |
fb98be5e DS |
1137 | cmd->rx_chain_select = iwl_mvm_scan_rx_chain(mvm); |
1138 | cmd->max_out_time = cpu_to_le32(params->max_out_time); | |
1139 | cmd->suspend_time = cpu_to_le32(params->suspend_time); | |
1140 | cmd->scan_prio = cpu_to_le32(IWL_SCAN_PRIORITY_HIGH); | |
fb98be5e | 1141 | cmd->iter_num = cpu_to_le32(1); |
af91344c DS |
1142 | |
1143 | if (mvm->fw->ucode_capa.flags & IWL_UCODE_TLV_FLAGS_EBS_SUPPORT && | |
1144 | mvm->last_ebs_successful) { | |
1145 | cmd->channel_opt[0].flags = | |
1146 | cpu_to_le16(IWL_SCAN_CHANNEL_FLAG_EBS | | |
1147 | IWL_SCAN_CHANNEL_FLAG_EBS_ACCURATE | | |
1148 | IWL_SCAN_CHANNEL_FLAG_CACHE_ADD); | |
1149 | cmd->channel_opt[1].flags = | |
1150 | cpu_to_le16(IWL_SCAN_CHANNEL_FLAG_EBS | | |
1151 | IWL_SCAN_CHANNEL_FLAG_EBS_ACCURATE | | |
1152 | IWL_SCAN_CHANNEL_FLAG_CACHE_ADD); | |
1153 | } | |
fb98be5e DS |
1154 | } |
1155 | ||
1156 | int iwl_mvm_unified_scan_lmac(struct iwl_mvm *mvm, | |
1157 | struct ieee80211_vif *vif, | |
1158 | struct ieee80211_scan_request *req) | |
1159 | { | |
1160 | struct iwl_host_cmd hcmd = { | |
1161 | .id = SCAN_OFFLOAD_REQUEST_CMD, | |
1162 | .len = { sizeof(struct iwl_scan_req_unified_lmac) + | |
1163 | sizeof(struct iwl_scan_channel_cfg_lmac) * | |
1164 | mvm->fw->ucode_capa.n_scan_channels + | |
1165 | sizeof(struct iwl_scan_probe_req), }, | |
1166 | .data = { mvm->scan_cmd, }, | |
1167 | .dataflags = { IWL_HCMD_DFL_NOCOPY, }, | |
1168 | }; | |
1169 | struct iwl_scan_req_unified_lmac *cmd = mvm->scan_cmd; | |
1170 | struct iwl_mvm_scan_params params = {}; | |
1171 | u32 flags; | |
1172 | int ssid_bitmap = 0; | |
1173 | int ret, i; | |
1174 | ||
1175 | lockdep_assert_held(&mvm->mutex); | |
1176 | ||
1177 | /* we should have failed registration if scan_cmd was NULL */ | |
1178 | if (WARN_ON(mvm->scan_cmd == NULL)) | |
1179 | return -ENOMEM; | |
1180 | ||
1181 | if (WARN_ON_ONCE(req->req.n_ssids > PROBE_OPTION_MAX || | |
1182 | req->ies.common_ie_len + req->ies.len[0] + | |
1183 | req->ies.len[1] + 24 + 2 > | |
1184 | SCAN_OFFLOAD_PROBE_REQ_SIZE || | |
1185 | req->req.n_channels > | |
1186 | mvm->fw->ucode_capa.n_scan_channels)) | |
1187 | return -1; | |
1188 | ||
1189 | mvm->scan_status = IWL_MVM_SCAN_OS; | |
1190 | ||
1191 | iwl_mvm_scan_calc_params(mvm, vif, req->req.n_ssids, req->req.flags, | |
1192 | ¶ms); | |
1193 | ||
1194 | iwl_mvm_build_generic_unified_scan_cmd(mvm, cmd, ¶ms); | |
1195 | ||
1196 | cmd->n_channels = (u8)req->req.n_channels; | |
1197 | ||
1198 | flags = IWL_MVM_LMAC_SCAN_FLAG_PASS_ALL; | |
1199 | ||
1200 | if (req->req.n_ssids == 1 && req->req.ssids[0].ssid_len != 0) | |
1201 | flags |= IWL_MVM_LMAC_SCAN_FLAG_PRE_CONNECTION; | |
1202 | ||
1203 | if (params.passive_fragmented) | |
1204 | flags |= IWL_MVM_LMAC_SCAN_FLAG_FRAGMENTED; | |
1205 | ||
1206 | if (req->req.n_ssids == 0) | |
1207 | flags |= IWL_MVM_LMAC_SCAN_FLAG_PASSIVE; | |
1208 | ||
1209 | cmd->scan_flags = cpu_to_le32(flags); | |
1210 | ||
1211 | cmd->flags = iwl_mvm_scan_rxon_flags(req->req.channels[0]->band); | |
1212 | cmd->filter_flags = cpu_to_le32(MAC_FILTER_ACCEPT_GRP | | |
1213 | MAC_FILTER_IN_BEACON); | |
1214 | iwl_mvm_unified_scan_fill_tx_cmd(mvm, cmd->tx_cmd, req->req.no_cck); | |
1215 | iwl_mvm_scan_fill_ssids(cmd->direct_scan, req->req.ssids, | |
1216 | req->req.n_ssids, 0); | |
1217 | ||
1218 | cmd->schedule[0].delay = 0; | |
1219 | cmd->schedule[0].iterations = 1; | |
1220 | cmd->schedule[0].full_scan_mul = 0; | |
1221 | cmd->schedule[1].delay = 0; | |
1222 | cmd->schedule[1].iterations = 0; | |
1223 | cmd->schedule[1].full_scan_mul = 0; | |
1224 | ||
1225 | for (i = 1; i <= req->req.n_ssids; i++) | |
1226 | ssid_bitmap |= BIT(i); | |
1227 | ||
1228 | iwl_mvm_lmac_scan_cfg_channels(mvm, req->req.channels, | |
1229 | req->req.n_channels, ssid_bitmap, | |
1230 | cmd); | |
1231 | ||
1232 | iwl_mvm_build_unified_scan_probe(mvm, vif, &req->ies, cmd); | |
1233 | ||
1234 | ret = iwl_mvm_send_cmd(mvm, &hcmd); | |
1235 | if (!ret) { | |
1236 | IWL_DEBUG_SCAN(mvm, "Scan request was sent successfully\n"); | |
1237 | } else { | |
1238 | /* | |
1239 | * If the scan failed, it usually means that the FW was unable | |
1240 | * to allocate the time events. Warn on it, but maybe we | |
1241 | * should try to send the command again with different params. | |
1242 | */ | |
1243 | IWL_ERR(mvm, "Scan failed! ret %d\n", ret); | |
1244 | mvm->scan_status = IWL_MVM_SCAN_NONE; | |
1245 | ret = -EIO; | |
1246 | } | |
1247 | return ret; | |
1248 | } | |
1249 | ||
1250 | int iwl_mvm_unified_sched_scan_lmac(struct iwl_mvm *mvm, | |
1251 | struct ieee80211_vif *vif, | |
1252 | struct cfg80211_sched_scan_request *req, | |
1253 | struct ieee80211_scan_ies *ies) | |
1254 | { | |
1255 | struct iwl_host_cmd hcmd = { | |
1256 | .id = SCAN_OFFLOAD_REQUEST_CMD, | |
1257 | .len = { sizeof(struct iwl_scan_req_unified_lmac) + | |
1258 | sizeof(struct iwl_scan_channel_cfg_lmac) * | |
1259 | mvm->fw->ucode_capa.n_scan_channels + | |
1260 | sizeof(struct iwl_scan_probe_req), }, | |
1261 | .data = { mvm->scan_cmd, }, | |
1262 | .dataflags = { IWL_HCMD_DFL_NOCOPY, }, | |
1263 | }; | |
1264 | struct iwl_scan_req_unified_lmac *cmd = mvm->scan_cmd; | |
1265 | struct iwl_mvm_scan_params params = {}; | |
1266 | int ret; | |
1267 | u32 flags = 0, ssid_bitmap = 0; | |
1268 | ||
1269 | lockdep_assert_held(&mvm->mutex); | |
1270 | ||
1271 | /* we should have failed registration if scan_cmd was NULL */ | |
1272 | if (WARN_ON(mvm->scan_cmd == NULL)) | |
1273 | return -ENOMEM; | |
1274 | ||
1275 | if (WARN_ON_ONCE(req->n_ssids > PROBE_OPTION_MAX || | |
1276 | ies->common_ie_len + ies->len[0] + ies->len[1] + 24 + 2 | |
1277 | > SCAN_OFFLOAD_PROBE_REQ_SIZE || | |
1278 | req->n_channels > mvm->fw->ucode_capa.n_scan_channels)) | |
1279 | return -ENOBUFS; | |
1280 | ||
1281 | iwl_mvm_scan_calc_params(mvm, vif, req->n_ssids, 0, ¶ms); | |
1282 | ||
1283 | iwl_mvm_build_generic_unified_scan_cmd(mvm, cmd, ¶ms); | |
1284 | ||
1285 | cmd->n_channels = (u8)req->n_channels; | |
1286 | ||
1287 | if (req->n_match_sets && req->match_sets[0].ssid.ssid_len) { | |
1288 | IWL_DEBUG_SCAN(mvm, | |
1289 | "Sending scheduled scan with filtering, n_match_sets %d\n", | |
1290 | req->n_match_sets); | |
1291 | } else { | |
1292 | IWL_DEBUG_SCAN(mvm, | |
1293 | "Sending Scheduled scan without filtering\n"); | |
1294 | flags |= IWL_MVM_LMAC_SCAN_FLAG_PASS_ALL; | |
1295 | } | |
1296 | ||
1297 | if (req->n_ssids == 1 && req->ssids[0].ssid_len != 0) | |
1298 | flags |= IWL_MVM_LMAC_SCAN_FLAG_PRE_CONNECTION; | |
1299 | ||
1300 | if (params.passive_fragmented) | |
1301 | flags |= IWL_MVM_LMAC_SCAN_FLAG_FRAGMENTED; | |
1302 | ||
1303 | if (req->n_ssids == 0) | |
1304 | flags |= IWL_MVM_LMAC_SCAN_FLAG_PASSIVE; | |
1305 | ||
1306 | cmd->scan_flags = cpu_to_le32(flags); | |
1307 | ||
1308 | cmd->flags = iwl_mvm_scan_rxon_flags(req->channels[0]->band); | |
1309 | cmd->filter_flags = cpu_to_le32(MAC_FILTER_ACCEPT_GRP | | |
1310 | MAC_FILTER_IN_BEACON); | |
1311 | iwl_mvm_unified_scan_fill_tx_cmd(mvm, cmd->tx_cmd, false); | |
1312 | iwl_scan_offload_build_ssid(req, cmd->direct_scan, &ssid_bitmap, false); | |
1313 | ||
b14fc2be | 1314 | cmd->schedule[0].delay = cpu_to_le16(req->interval / MSEC_PER_SEC); |
fb98be5e DS |
1315 | cmd->schedule[0].iterations = IWL_FAST_SCHED_SCAN_ITERATIONS; |
1316 | cmd->schedule[0].full_scan_mul = 1; | |
1317 | ||
b14fc2be | 1318 | cmd->schedule[1].delay = cpu_to_le16(req->interval / MSEC_PER_SEC); |
fb98be5e DS |
1319 | cmd->schedule[1].iterations = 0xff; |
1320 | cmd->schedule[1].full_scan_mul = IWL_FULL_SCAN_MULTIPLIER; | |
1321 | ||
1322 | iwl_mvm_lmac_scan_cfg_channels(mvm, req->channels, req->n_channels, | |
1323 | ssid_bitmap, cmd); | |
1324 | ||
1325 | iwl_mvm_build_unified_scan_probe(mvm, vif, ies, cmd); | |
1326 | ||
1327 | ret = iwl_mvm_send_cmd(mvm, &hcmd); | |
1328 | if (!ret) { | |
1329 | IWL_DEBUG_SCAN(mvm, | |
1330 | "Sched scan request was sent successfully\n"); | |
1331 | } else { | |
1332 | /* | |
1333 | * If the scan failed, it usually means that the FW was unable | |
1334 | * to allocate the time events. Warn on it, but maybe we | |
1335 | * should try to send the command again with different params. | |
1336 | */ | |
1337 | IWL_ERR(mvm, "Sched scan failed! ret %d\n", ret); | |
1338 | mvm->scan_status = IWL_MVM_SCAN_NONE; | |
1339 | ret = -EIO; | |
1340 | } | |
1341 | return ret; | |
1342 | } | |
1343 | ||
1344 | ||
1345 | int iwl_mvm_cancel_scan(struct iwl_mvm *mvm) | |
1346 | { | |
1347 | if (mvm->fw->ucode_capa.api[0] & IWL_UCODE_TLV_API_LMAC_SCAN) | |
1348 | return iwl_mvm_scan_offload_stop(mvm, true); | |
1349 | return iwl_mvm_cancel_regular_scan(mvm); | |
1350 | } |