1 /******************************************************************************
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.
8 * Copyright(c) 2012 - 2014 Intel Corporation. All rights reserved.
9 * Copyright(c) 2013 - 2014 Intel Mobile Communications GmbH
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.
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.
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,
25 * The full GNU General Public License is included in this distribution
26 * in the file called COPYING.
28 * Contact Information:
29 * Intel Linux Wireless <ilw@linux.intel.com>
30 * Intel Corporation, 5200 N.E. Elam Young Parkway, Hillsboro, OR 97124-6497
34 * Copyright(c) 2012 - 2014 Intel Corporation. All rights reserved.
35 * Copyright(c) 2013 - 2014 Intel Mobile Communications GmbH
36 * All rights reserved.
38 * Redistribution and use in source and binary forms, with or without
39 * modification, are permitted provided that the following conditions
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
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.
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.
64 *****************************************************************************/
66 #include <linux/etherdevice.h>
67 #include <net/mac80211.h>
70 #include "iwl-eeprom-parse.h"
71 #include "fw-api-scan.h"
73 #define IWL_PLCP_QUIET_THRESH 1
74 #define IWL_ACTIVE_QUIET_TIME 10
76 struct iwl_mvm_scan_params {
79 bool passive_fragmented;
83 } dwell[IEEE80211_NUM_BANDS];
86 static inline __le16 iwl_mvm_scan_rx_chain(struct iwl_mvm *mvm)
91 if (mvm->scan_rx_ant != ANT_NONE)
92 rx_ant = mvm->scan_rx_ant;
94 rx_ant = mvm->fw->valid_rx_ant;
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);
102 static __le32 iwl_mvm_scan_rxon_flags(enum ieee80211_band band)
104 if (band == IEEE80211_BAND_2GHZ)
105 return cpu_to_le32(PHY_BAND_24);
107 return cpu_to_le32(PHY_BAND_5);
111 iwl_mvm_scan_rate_n_flags(struct iwl_mvm *mvm, enum ieee80211_band band,
116 mvm->scan_last_antenna_idx =
117 iwl_mvm_next_antenna(mvm, mvm->fw->valid_tx_ant,
118 mvm->scan_last_antenna_idx);
119 tx_ant = BIT(mvm->scan_last_antenna_idx) << RATE_MCS_ANT_POS;
121 if (band == IEEE80211_BAND_2GHZ && !no_cck)
122 return cpu_to_le32(IWL_RATE_1M_PLCP | RATE_MCS_CCK_MSK |
125 return cpu_to_le32(IWL_RATE_6M_PLCP | tx_ant);
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
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)
140 for (req_idx = n_ssids - 1, fw_idx = 0; req_idx >= first;
141 req_idx--, fw_idx++) {
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,
146 ssids[req_idx].ssid_len);
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,
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.
160 static u16 iwl_mvm_get_active_dwell(enum ieee80211_band band, int n_ssids)
162 if (band == IEEE80211_BAND_2GHZ)
163 return 20 + 3 * (n_ssids + 1);
164 return 10 + 2 * (n_ssids + 1);
167 static u16 iwl_mvm_get_passive_dwell(enum ieee80211_band band)
169 return band == IEEE80211_BAND_2GHZ ? 100 + 20 : 100 + 10;
172 static void iwl_mvm_scan_fill_channels(struct iwl_scan_cmd *cmd,
173 struct cfg80211_scan_request *req,
175 struct iwl_mvm_scan_params *params)
177 struct iwl_scan_channel *chan = (struct iwl_scan_channel *)
178 (cmd->data + le16_to_cpu(cmd->tx_cmd.len));
180 int type = BIT(req->n_ssids) - 1;
181 enum ieee80211_band band = req->channels[0]->band;
184 type |= BIT(req->n_ssids);
186 for (i = 0; i < cmd->channel_count; i++) {
187 chan->channel = cpu_to_le16(req->channels[i]->hw_value);
188 chan->type = cpu_to_le32(type);
189 if (req->channels[i]->flags & IEEE80211_CHAN_NO_IR)
190 chan->type &= cpu_to_le32(~SCAN_CHANNEL_TYPE_ACTIVE);
191 chan->active_dwell = cpu_to_le16(params->dwell[band].active);
192 chan->passive_dwell = cpu_to_le16(params->dwell[band].passive);
193 chan->iteration_count = cpu_to_le16(1);
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.
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,
208 const u8 *band_ie, int band_ie_len,
209 const u8 *common_ie, int common_ie_len,
215 /* Make sure there is enough space for the probe request,
216 * two mandatory IEs and the data */
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);
229 /* for passive scans, no need to fill anything */
233 /* points to the payload of the request */
234 pos = &frame->u.probe_req.variable[0];
236 /* fill in our SSID IE */
237 left -= ssid_len + 2;
240 *pos++ = WLAN_EID_SSID;
242 if (ssid && ssid_len) { /* ssid_len may be == 0 even if ssid is valid */
243 memcpy(pos, ssid, ssid_len);
249 if (WARN_ON(left < band_ie_len + common_ie_len))
252 if (band_ie && band_ie_len) {
253 memcpy(pos, band_ie, band_ie_len);
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;
267 static void iwl_mvm_scan_condition_iterator(void *data, u8 *mac,
268 struct ieee80211_vif *vif)
270 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
271 bool *global_bound = data;
273 if (mvmvif->phy_ctxt && mvmvif->phy_ctxt->id < MAX_PHYS)
274 *global_bound = true;
277 static void iwl_mvm_scan_calc_params(struct iwl_mvm *mvm,
278 struct ieee80211_vif *vif,
279 int n_ssids, u32 flags,
280 struct iwl_mvm_scan_params *params)
282 bool global_bound = false;
283 enum ieee80211_band band;
284 u8 frag_passive_dwell = 0;
286 ieee80211_iterate_active_interfaces_atomic(mvm->hw,
287 IEEE80211_IFACE_ITER_NORMAL,
288 iwl_mvm_scan_condition_iterator,
294 params->suspend_time = 30;
295 params->max_out_time = 170;
297 if (iwl_mvm_low_latency(mvm)) {
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;
304 params->suspend_time = 120;
305 params->max_out_time = 120;
309 if (frag_passive_dwell && (mvm->fw->ucode_capa.api[0] &
310 IWL_UCODE_TLV_API_FRAGMENTED_SCAN)) {
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
317 if (vif->type == NL80211_IFTYPE_P2P_DEVICE) {
319 iwl_mvm_get_passive_dwell(IEEE80211_BAND_2GHZ);
320 params->max_out_time = passive_dwell;
322 params->passive_fragmented = true;
326 if (flags & NL80211_SCAN_FLAG_LOW_PRIORITY)
327 params->max_out_time = 200;
331 for (band = IEEE80211_BAND_2GHZ; band < IEEE80211_NUM_BANDS; band++) {
332 if (params->passive_fragmented)
333 params->dwell[band].passive = frag_passive_dwell;
335 params->dwell[band].passive =
336 iwl_mvm_get_passive_dwell(band);
337 params->dwell[band].active = iwl_mvm_get_active_dwell(band,
342 static inline bool iwl_mvm_rrm_scan_needed(struct iwl_mvm *mvm)
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;
349 static int iwl_mvm_max_scan_ie_fw_cmd_room(struct iwl_mvm *mvm,
354 if (mvm->fw->ucode_capa.api[0] & IWL_UCODE_TLV_API_LMAC_SCAN)
355 max_probe_len = SCAN_OFFLOAD_PROBE_REQ_SIZE;
357 max_probe_len = mvm->fw->ucode_capa.max_probe_length;
359 /* we create the 802.11 header and SSID element */
360 max_probe_len -= 24 + 2;
362 /* basic ssid is added only for hw_scan with and old api */
363 if (!(mvm->fw->ucode_capa.flags & IWL_UCODE_TLV_FLAGS_NO_BASIC_SSID) &&
364 !(mvm->fw->ucode_capa.api[0] & IWL_UCODE_TLV_API_LMAC_SCAN) &&
368 return max_probe_len;
371 int iwl_mvm_max_scan_ie_len(struct iwl_mvm *mvm, bool is_sched_scan)
373 int max_ie_len = iwl_mvm_max_scan_ie_fw_cmd_room(mvm, is_sched_scan);
375 if (!(mvm->fw->ucode_capa.api[0] & IWL_UCODE_TLV_API_LMAC_SCAN))
378 /* TODO: [BUG] This function should return the maximum allowed size of
379 * scan IEs, however the LMAC scan api contains both 2GHZ and 5GHZ IEs
380 * in the same command. So the correct implementation of this function
381 * is just iwl_mvm_max_scan_ie_fw_cmd_room() / 2. Currently the scan
382 * command has only 512 bytes and it would leave us with about 240
383 * bytes for scan IEs, which is clearly not enough. So meanwhile
384 * we will report an incorrect value. This may result in a failure to
385 * issue a scan in unified_scan_lmac and unified_sched_scan_lmac
386 * functions with -ENOBUFS, if a large enough probe will be provided.
391 int iwl_mvm_scan_request(struct iwl_mvm *mvm,
392 struct ieee80211_vif *vif,
393 struct cfg80211_scan_request *req)
395 struct iwl_host_cmd hcmd = {
396 .id = SCAN_REQUEST_CMD,
398 .data = { mvm->scan_cmd, },
399 .dataflags = { IWL_HCMD_DFL_NOCOPY, },
401 struct iwl_scan_cmd *cmd = mvm->scan_cmd;
406 bool basic_ssid = !(mvm->fw->ucode_capa.flags &
407 IWL_UCODE_TLV_FLAGS_NO_BASIC_SSID);
408 struct iwl_mvm_scan_params params = {};
410 lockdep_assert_held(&mvm->mutex);
412 /* we should have failed registration if scan_cmd was NULL */
413 if (WARN_ON(mvm->scan_cmd == NULL))
416 IWL_DEBUG_SCAN(mvm, "Handling mac80211 scan request\n");
417 mvm->scan_status = IWL_MVM_SCAN_OS;
418 memset(cmd, 0, ksize(cmd));
420 cmd->channel_count = (u8)req->n_channels;
421 cmd->quiet_time = cpu_to_le16(IWL_ACTIVE_QUIET_TIME);
422 cmd->quiet_plcp_th = cpu_to_le16(IWL_PLCP_QUIET_THRESH);
423 cmd->rxchain_sel_flags = iwl_mvm_scan_rx_chain(mvm);
425 iwl_mvm_scan_calc_params(mvm, vif, req->n_ssids, req->flags, ¶ms);
426 cmd->max_out_time = cpu_to_le32(params.max_out_time);
427 cmd->suspend_time = cpu_to_le32(params.suspend_time);
428 if (params.passive_fragmented)
429 cmd->scan_flags |= SCAN_FLAGS_FRAGMENTED_SCAN;
431 cmd->rxon_flags = iwl_mvm_scan_rxon_flags(req->channels[0]->band);
432 cmd->filter_flags = cpu_to_le32(MAC_FILTER_ACCEPT_GRP |
433 MAC_FILTER_IN_BEACON);
435 if (vif->type == NL80211_IFTYPE_P2P_DEVICE)
436 cmd->type = cpu_to_le32(SCAN_TYPE_DISCOVERY_FORCED);
438 cmd->type = cpu_to_le32(SCAN_TYPE_FORCED);
440 cmd->repeats = cpu_to_le32(1);
443 * If the user asked for passive scan, don't change to active scan if
444 * you see any activity on the channel - remain passive.
446 if (req->n_ssids > 0) {
447 cmd->passive2active = cpu_to_le16(1);
448 cmd->scan_flags |= SCAN_FLAGS_PASSIVE2ACTIVE;
450 ssid = req->ssids[0].ssid;
451 ssid_len = req->ssids[0].ssid_len;
454 cmd->passive2active = 0;
455 cmd->scan_flags &= ~SCAN_FLAGS_PASSIVE2ACTIVE;
458 iwl_mvm_scan_fill_ssids(cmd->direct_scan, req->ssids, req->n_ssids,
461 cmd->tx_cmd.tx_flags = cpu_to_le32(TX_CMD_FLG_SEQ_CTL |
463 cmd->tx_cmd.sta_id = mvm->aux_sta.sta_id;
464 cmd->tx_cmd.life_time = cpu_to_le32(TX_CMD_LIFE_TIME_INFINITE);
465 cmd->tx_cmd.rate_n_flags =
466 iwl_mvm_scan_rate_n_flags(mvm, req->channels[0]->band,
470 cpu_to_le16(iwl_mvm_fill_probe_req(
471 (struct ieee80211_mgmt *)cmd->data,
473 req->n_ssids, ssid, ssid_len,
474 req->ie, req->ie_len, NULL, 0,
475 mvm->fw->ucode_capa.max_probe_length));
477 iwl_mvm_scan_fill_channels(cmd, req, basic_ssid, ¶ms);
479 cmd->len = cpu_to_le16(sizeof(struct iwl_scan_cmd) +
480 le16_to_cpu(cmd->tx_cmd.len) +
481 (cmd->channel_count * sizeof(struct iwl_scan_channel)));
482 hcmd.len[0] = le16_to_cpu(cmd->len);
484 status = SCAN_RESPONSE_OK;
485 ret = iwl_mvm_send_cmd_status(mvm, &hcmd, &status);
486 if (!ret && status == SCAN_RESPONSE_OK) {
487 IWL_DEBUG_SCAN(mvm, "Scan request was sent successfully\n");
490 * If the scan failed, it usually means that the FW was unable
491 * to allocate the time events. Warn on it, but maybe we
492 * should try to send the command again with different params.
494 IWL_ERR(mvm, "Scan failed! status 0x%x ret %d\n",
496 mvm->scan_status = IWL_MVM_SCAN_NONE;
502 int iwl_mvm_rx_scan_response(struct iwl_mvm *mvm, struct iwl_rx_cmd_buffer *rxb,
503 struct iwl_device_cmd *cmd)
505 struct iwl_rx_packet *pkt = rxb_addr(rxb);
506 struct iwl_cmd_response *resp = (void *)pkt->data;
508 IWL_DEBUG_SCAN(mvm, "Scan response received. status 0x%x\n",
509 le32_to_cpu(resp->status));
513 int iwl_mvm_rx_scan_complete(struct iwl_mvm *mvm, struct iwl_rx_cmd_buffer *rxb,
514 struct iwl_device_cmd *cmd)
516 struct iwl_rx_packet *pkt = rxb_addr(rxb);
517 struct iwl_scan_complete_notif *notif = (void *)pkt->data;
519 lockdep_assert_held(&mvm->mutex);
521 IWL_DEBUG_SCAN(mvm, "Scan complete: status=0x%x scanned channels=%d\n",
522 notif->status, notif->scanned_channels);
524 if (mvm->scan_status == IWL_MVM_SCAN_OS)
525 mvm->scan_status = IWL_MVM_SCAN_NONE;
526 ieee80211_scan_completed(mvm->hw, notif->status != SCAN_COMP_STATUS_OK);
528 iwl_mvm_unref(mvm, IWL_MVM_REF_SCAN);
533 int iwl_mvm_rx_scan_offload_results(struct iwl_mvm *mvm,
534 struct iwl_rx_cmd_buffer *rxb,
535 struct iwl_device_cmd *cmd)
537 struct iwl_rx_packet *pkt = rxb_addr(rxb);
538 u8 client_bitmap = 0;
540 if (!(mvm->fw->ucode_capa.api[0] & IWL_UCODE_TLV_API_LMAC_SCAN)) {
541 struct iwl_sched_scan_results *notif = (void *)pkt->data;
543 client_bitmap = notif->client_bitmap;
546 if (mvm->fw->ucode_capa.api[0] & IWL_UCODE_TLV_API_LMAC_SCAN ||
547 client_bitmap & SCAN_CLIENT_SCHED_SCAN) {
548 if (mvm->scan_status == IWL_MVM_SCAN_SCHED) {
549 IWL_DEBUG_SCAN(mvm, "Scheduled scan results\n");
550 ieee80211_sched_scan_results(mvm->hw);
552 IWL_DEBUG_SCAN(mvm, "Scan results\n");
559 static bool iwl_mvm_scan_abort_notif(struct iwl_notif_wait_data *notif_wait,
560 struct iwl_rx_packet *pkt, void *data)
562 struct iwl_mvm *mvm =
563 container_of(notif_wait, struct iwl_mvm, notif_wait);
564 struct iwl_scan_complete_notif *notif;
567 switch (pkt->hdr.cmd) {
569 resp = (void *)pkt->data;
570 if (*resp == CAN_ABORT_STATUS) {
572 "Scan can be aborted, wait until completion\n");
577 * If scan cannot be aborted, it means that we had a
578 * SCAN_COMPLETE_NOTIFICATION in the pipe and it called
579 * ieee80211_scan_completed already.
581 IWL_DEBUG_SCAN(mvm, "Scan cannot be aborted, exit now: %d\n",
585 case SCAN_COMPLETE_NOTIFICATION:
586 notif = (void *)pkt->data;
587 IWL_DEBUG_SCAN(mvm, "Scan aborted: status 0x%x\n",
597 static int iwl_mvm_cancel_regular_scan(struct iwl_mvm *mvm)
599 struct iwl_notification_wait wait_scan_abort;
600 static const u8 scan_abort_notif[] = { SCAN_ABORT_CMD,
601 SCAN_COMPLETE_NOTIFICATION };
604 if (mvm->scan_status == IWL_MVM_SCAN_NONE)
607 if (iwl_mvm_is_radio_killed(mvm)) {
608 ieee80211_scan_completed(mvm->hw, true);
609 iwl_mvm_unref(mvm, IWL_MVM_REF_SCAN);
610 mvm->scan_status = IWL_MVM_SCAN_NONE;
614 iwl_init_notification_wait(&mvm->notif_wait, &wait_scan_abort,
616 ARRAY_SIZE(scan_abort_notif),
617 iwl_mvm_scan_abort_notif, NULL);
619 ret = iwl_mvm_send_cmd_pdu(mvm, SCAN_ABORT_CMD, 0, 0, NULL);
621 IWL_ERR(mvm, "Couldn't send SCAN_ABORT_CMD: %d\n", ret);
622 /* mac80211's state will be cleaned in the nic_restart flow */
623 goto out_remove_notif;
626 return iwl_wait_notification(&mvm->notif_wait, &wait_scan_abort, HZ);
629 iwl_remove_notification(&mvm->notif_wait, &wait_scan_abort);
633 int iwl_mvm_rx_scan_offload_complete_notif(struct iwl_mvm *mvm,
634 struct iwl_rx_cmd_buffer *rxb,
635 struct iwl_device_cmd *cmd)
637 struct iwl_rx_packet *pkt = rxb_addr(rxb);
638 u8 status, ebs_status;
640 if (mvm->fw->ucode_capa.api[0] & IWL_UCODE_TLV_API_LMAC_SCAN) {
641 struct iwl_periodic_scan_complete *scan_notif;
643 scan_notif = (void *)pkt->data;
644 status = scan_notif->status;
645 ebs_status = scan_notif->ebs_status;
647 struct iwl_scan_offload_complete *scan_notif;
649 scan_notif = (void *)pkt->data;
650 status = scan_notif->status;
651 ebs_status = scan_notif->ebs_status;
653 /* scan status must be locked for proper checking */
654 lockdep_assert_held(&mvm->mutex);
657 "%s completed, status %s, EBS status %s\n",
658 mvm->scan_status == IWL_MVM_SCAN_SCHED ?
659 "Scheduled scan" : "Scan",
660 status == IWL_SCAN_OFFLOAD_COMPLETED ?
661 "completed" : "aborted",
662 ebs_status == IWL_SCAN_EBS_SUCCESS ?
663 "success" : "failed");
666 /* only call mac80211 completion if the stop was initiated by FW */
667 if (mvm->scan_status == IWL_MVM_SCAN_SCHED) {
668 mvm->scan_status = IWL_MVM_SCAN_NONE;
669 ieee80211_sched_scan_stopped(mvm->hw);
670 } else if (mvm->scan_status == IWL_MVM_SCAN_OS) {
671 mvm->scan_status = IWL_MVM_SCAN_NONE;
672 ieee80211_scan_completed(mvm->hw,
673 status == IWL_SCAN_OFFLOAD_ABORTED);
676 mvm->last_ebs_successful = !ebs_status;
681 static void iwl_scan_offload_build_tx_cmd(struct iwl_mvm *mvm,
682 struct ieee80211_vif *vif,
683 struct ieee80211_scan_ies *ies,
684 enum ieee80211_band band,
685 struct iwl_tx_cmd *cmd,
690 cmd->tx_flags = cpu_to_le32(TX_CMD_FLG_SEQ_CTL);
691 cmd->life_time = cpu_to_le32(TX_CMD_LIFE_TIME_INFINITE);
692 cmd->sta_id = mvm->aux_sta.sta_id;
694 cmd->rate_n_flags = iwl_mvm_scan_rate_n_flags(mvm, band, false);
696 cmd_len = iwl_mvm_fill_probe_req((struct ieee80211_mgmt *)data,
699 ies->ies[band], ies->len[band],
700 ies->common_ies, ies->common_ie_len,
701 SCAN_OFFLOAD_PROBE_REQ_SIZE);
702 cmd->len = cpu_to_le16(cmd_len);
705 static void iwl_build_scan_cmd(struct iwl_mvm *mvm,
706 struct ieee80211_vif *vif,
707 struct cfg80211_sched_scan_request *req,
708 struct iwl_scan_offload_cmd *scan,
709 struct iwl_mvm_scan_params *params)
711 scan->channel_count = req->n_channels;
712 scan->quiet_time = cpu_to_le16(IWL_ACTIVE_QUIET_TIME);
713 scan->quiet_plcp_th = cpu_to_le16(IWL_PLCP_QUIET_THRESH);
714 scan->good_CRC_th = IWL_GOOD_CRC_TH_DEFAULT;
715 scan->rx_chain = iwl_mvm_scan_rx_chain(mvm);
717 scan->max_out_time = cpu_to_le32(params->max_out_time);
718 scan->suspend_time = cpu_to_le32(params->suspend_time);
720 scan->filter_flags |= cpu_to_le32(MAC_FILTER_ACCEPT_GRP |
721 MAC_FILTER_IN_BEACON);
722 scan->scan_type = cpu_to_le32(SCAN_TYPE_BACKGROUND);
723 scan->rep_count = cpu_to_le32(1);
725 if (params->passive_fragmented)
726 scan->scan_flags |= SCAN_FLAGS_FRAGMENTED_SCAN;
729 static int iwl_ssid_exist(u8 *ssid, u8 ssid_len, struct iwl_ssid_ie *ssid_list)
733 for (i = 0; i < PROBE_OPTION_MAX; i++) {
734 if (!ssid_list[i].len)
736 if (ssid_list[i].len == ssid_len &&
737 !memcmp(ssid_list->ssid, ssid, ssid_len))
743 static void iwl_scan_offload_build_ssid(struct cfg80211_sched_scan_request *req,
744 struct iwl_ssid_ie *direct_scan,
745 u32 *ssid_bitmap, bool basic_ssid)
751 * copy SSIDs from match list.
752 * iwl_config_sched_scan_profiles() uses the order of these ssids to
755 for (i = 0; i < req->n_match_sets && i < PROBE_OPTION_MAX; i++) {
756 /* skip empty SSID matchsets */
757 if (!req->match_sets[i].ssid.ssid_len)
759 direct_scan[i].id = WLAN_EID_SSID;
760 direct_scan[i].len = req->match_sets[i].ssid.ssid_len;
761 memcpy(direct_scan[i].ssid, req->match_sets[i].ssid.ssid,
765 /* add SSIDs from scan SSID list */
767 for (j = 0; j < req->n_ssids && i < PROBE_OPTION_MAX; j++) {
768 index = iwl_ssid_exist(req->ssids[j].ssid,
769 req->ssids[j].ssid_len,
772 if (!req->ssids[j].ssid_len && basic_ssid)
774 direct_scan[i].id = WLAN_EID_SSID;
775 direct_scan[i].len = req->ssids[j].ssid_len;
776 memcpy(direct_scan[i].ssid, req->ssids[j].ssid,
778 *ssid_bitmap |= BIT(i + 1);
781 *ssid_bitmap |= BIT(index + 1);
786 static void iwl_build_channel_cfg(struct iwl_mvm *mvm,
787 struct cfg80211_sched_scan_request *req,
789 enum ieee80211_band band,
792 struct iwl_mvm_scan_params *params)
794 u32 n_channels = mvm->fw->ucode_capa.n_scan_channels;
795 __le32 *type = (__le32 *)channels_buffer;
796 __le16 *channel_number = (__le16 *)(type + n_channels);
797 __le16 *iter_count = channel_number + n_channels;
798 __le32 *iter_interval = (__le32 *)(iter_count + n_channels);
799 u8 *active_dwell = (u8 *)(iter_interval + n_channels);
800 u8 *passive_dwell = active_dwell + n_channels;
803 for (i = 0; i < req->n_channels; i++) {
804 struct ieee80211_channel *chan = req->channels[i];
806 if (chan->band != band)
812 channel_number[index] = cpu_to_le16(chan->hw_value);
813 active_dwell[index] = params->dwell[band].active;
814 passive_dwell[index] = params->dwell[band].passive;
816 iter_count[index] = cpu_to_le16(1);
817 iter_interval[index] = 0;
819 if (!(chan->flags & IEEE80211_CHAN_NO_IR))
821 cpu_to_le32(IWL_SCAN_OFFLOAD_CHANNEL_ACTIVE);
823 type[index] |= cpu_to_le32(IWL_SCAN_OFFLOAD_CHANNEL_FULL |
824 IWL_SCAN_OFFLOAD_CHANNEL_PARTIAL);
826 if (chan->flags & IEEE80211_CHAN_NO_HT40)
828 cpu_to_le32(IWL_SCAN_OFFLOAD_CHANNEL_NARROW);
830 /* scan for all SSIDs from req->ssids */
831 type[index] |= cpu_to_le32(ssid_bitmap);
835 int iwl_mvm_config_sched_scan(struct iwl_mvm *mvm,
836 struct ieee80211_vif *vif,
837 struct cfg80211_sched_scan_request *req,
838 struct ieee80211_scan_ies *ies)
840 int band_2ghz = mvm->nvm_data->bands[IEEE80211_BAND_2GHZ].n_channels;
841 int band_5ghz = mvm->nvm_data->bands[IEEE80211_BAND_5GHZ].n_channels;
847 bool basic_ssid = !(mvm->fw->ucode_capa.flags &
848 IWL_UCODE_TLV_FLAGS_NO_BASIC_SSID);
850 struct iwl_scan_offload_cfg *scan_cfg;
851 struct iwl_host_cmd cmd = {
852 .id = SCAN_OFFLOAD_CONFIG_CMD,
854 struct iwl_mvm_scan_params params = {};
856 lockdep_assert_held(&mvm->mutex);
858 cmd_len = sizeof(struct iwl_scan_offload_cfg) +
859 mvm->fw->ucode_capa.n_scan_channels * IWL_SCAN_CHAN_SIZE +
860 2 * SCAN_OFFLOAD_PROBE_REQ_SIZE;
862 scan_cfg = kzalloc(cmd_len, GFP_KERNEL);
866 probes = scan_cfg->data +
867 mvm->fw->ucode_capa.n_scan_channels * IWL_SCAN_CHAN_SIZE;
869 iwl_mvm_scan_calc_params(mvm, vif, req->n_ssids, 0, ¶ms);
870 iwl_build_scan_cmd(mvm, vif, req, &scan_cfg->scan_cmd, ¶ms);
871 scan_cfg->scan_cmd.len = cpu_to_le16(cmd_len);
873 iwl_scan_offload_build_ssid(req, scan_cfg->scan_cmd.direct_scan,
874 &ssid_bitmap, basic_ssid);
875 /* build tx frames for supported bands */
877 iwl_scan_offload_build_tx_cmd(mvm, vif, ies,
879 &scan_cfg->scan_cmd.tx_cmd[0],
881 iwl_build_channel_cfg(mvm, req, scan_cfg->data,
882 IEEE80211_BAND_2GHZ, &head,
883 ssid_bitmap, ¶ms);
886 iwl_scan_offload_build_tx_cmd(mvm, vif, ies,
888 &scan_cfg->scan_cmd.tx_cmd[1],
890 SCAN_OFFLOAD_PROBE_REQ_SIZE);
891 iwl_build_channel_cfg(mvm, req, scan_cfg->data,
892 IEEE80211_BAND_5GHZ, &head,
893 ssid_bitmap, ¶ms);
896 cmd.data[0] = scan_cfg;
897 cmd.len[0] = cmd_len;
898 cmd.dataflags[0] = IWL_HCMD_DFL_NOCOPY;
900 IWL_DEBUG_SCAN(mvm, "Sending scheduled scan config\n");
902 ret = iwl_mvm_send_cmd(mvm, &cmd);
907 int iwl_mvm_config_sched_scan_profiles(struct iwl_mvm *mvm,
908 struct cfg80211_sched_scan_request *req)
910 struct iwl_scan_offload_profile *profile;
911 struct iwl_scan_offload_profile_cfg *profile_cfg;
912 struct iwl_scan_offload_blacklist *blacklist;
913 struct iwl_host_cmd cmd = {
914 .id = SCAN_OFFLOAD_UPDATE_PROFILES_CMD,
915 .len[1] = sizeof(*profile_cfg),
916 .dataflags[0] = IWL_HCMD_DFL_NOCOPY,
917 .dataflags[1] = IWL_HCMD_DFL_NOCOPY,
923 if (WARN_ON(req->n_match_sets > IWL_SCAN_MAX_PROFILES))
926 if (mvm->fw->ucode_capa.flags & IWL_UCODE_TLV_FLAGS_SHORT_BL)
927 blacklist_len = IWL_SCAN_SHORT_BLACKLIST_LEN;
929 blacklist_len = IWL_SCAN_MAX_BLACKLIST_LEN;
931 blacklist = kzalloc(sizeof(*blacklist) * blacklist_len, GFP_KERNEL);
935 profile_cfg = kzalloc(sizeof(*profile_cfg), GFP_KERNEL);
941 cmd.data[0] = blacklist;
942 cmd.len[0] = sizeof(*blacklist) * blacklist_len;
943 cmd.data[1] = profile_cfg;
945 /* No blacklist configuration */
947 profile_cfg->num_profiles = req->n_match_sets;
948 profile_cfg->active_clients = SCAN_CLIENT_SCHED_SCAN;
949 profile_cfg->pass_match = SCAN_CLIENT_SCHED_SCAN;
950 profile_cfg->match_notify = SCAN_CLIENT_SCHED_SCAN;
951 if (!req->n_match_sets || !req->match_sets[0].ssid.ssid_len)
952 profile_cfg->any_beacon_notify = SCAN_CLIENT_SCHED_SCAN;
954 for (i = 0; i < req->n_match_sets; i++) {
955 profile = &profile_cfg->profiles[i];
956 profile->ssid_index = i;
957 /* Support any cipher and auth algorithm */
958 profile->unicast_cipher = 0xff;
959 profile->auth_alg = 0xff;
960 profile->network_type = IWL_NETWORK_TYPE_ANY;
961 profile->band_selection = IWL_SCAN_OFFLOAD_SELECT_ANY;
962 profile->client_bitmap = SCAN_CLIENT_SCHED_SCAN;
965 IWL_DEBUG_SCAN(mvm, "Sending scheduled scan profile config\n");
967 ret = iwl_mvm_send_cmd(mvm, &cmd);
975 int iwl_mvm_sched_scan_start(struct iwl_mvm *mvm,
976 struct cfg80211_sched_scan_request *req)
978 struct iwl_scan_offload_req scan_req = {
979 .watchdog = IWL_SCHED_SCAN_WATCHDOG,
981 .schedule_line[0].iterations = IWL_FAST_SCHED_SCAN_ITERATIONS,
982 .schedule_line[0].delay = cpu_to_le16(req->interval / 1000),
983 .schedule_line[0].full_scan_mul = 1,
985 .schedule_line[1].iterations = 0xff,
986 .schedule_line[1].delay = cpu_to_le16(req->interval / 1000),
987 .schedule_line[1].full_scan_mul = IWL_FULL_SCAN_MULTIPLIER,
990 if (req->n_match_sets && req->match_sets[0].ssid.ssid_len) {
992 "Sending scheduled scan with filtering, filter len %d\n",
996 "Sending Scheduled scan without filtering\n");
997 scan_req.flags |= cpu_to_le16(IWL_SCAN_OFFLOAD_FLAG_PASS_ALL);
1000 if (mvm->last_ebs_successful &&
1001 mvm->fw->ucode_capa.flags & IWL_UCODE_TLV_FLAGS_EBS_SUPPORT)
1003 cpu_to_le16(IWL_SCAN_OFFLOAD_FLAG_EBS_ACCURATE_MODE);
1005 return iwl_mvm_send_cmd_pdu(mvm, SCAN_OFFLOAD_REQUEST_CMD, 0,
1006 sizeof(scan_req), &scan_req);
1009 static int iwl_mvm_send_scan_offload_abort(struct iwl_mvm *mvm)
1012 struct iwl_host_cmd cmd = {
1013 .id = SCAN_OFFLOAD_ABORT_CMD,
1017 /* Exit instantly with error when device is not ready
1018 * to receive scan abort command or it does not perform
1019 * scheduled scan currently */
1020 if (mvm->scan_status != IWL_MVM_SCAN_SCHED &&
1021 (!(mvm->fw->ucode_capa.api[0] & IWL_UCODE_TLV_API_LMAC_SCAN) ||
1022 mvm->scan_status != IWL_MVM_SCAN_OS))
1025 ret = iwl_mvm_send_cmd_status(mvm, &cmd, &status);
1029 if (status != CAN_ABORT_STATUS) {
1031 * The scan abort will return 1 for success or
1032 * 2 for "failure". A failure condition can be
1033 * due to simply not being in an active scan which
1034 * can occur if we send the scan abort before the
1035 * microcode has notified us that a scan is completed.
1037 IWL_DEBUG_SCAN(mvm, "SCAN OFFLOAD ABORT ret %d.\n", status);
1044 int iwl_mvm_scan_offload_stop(struct iwl_mvm *mvm, bool notify)
1047 struct iwl_notification_wait wait_scan_done;
1048 static const u8 scan_done_notif[] = { SCAN_OFFLOAD_COMPLETE, };
1049 bool sched = mvm->scan_status == IWL_MVM_SCAN_SCHED;
1051 lockdep_assert_held(&mvm->mutex);
1053 if (mvm->scan_status != IWL_MVM_SCAN_SCHED &&
1054 (!(mvm->fw->ucode_capa.api[0] & IWL_UCODE_TLV_API_LMAC_SCAN) ||
1055 mvm->scan_status != IWL_MVM_SCAN_OS)) {
1056 IWL_DEBUG_SCAN(mvm, "No scan to stop\n");
1060 iwl_init_notification_wait(&mvm->notif_wait, &wait_scan_done,
1062 ARRAY_SIZE(scan_done_notif),
1065 ret = iwl_mvm_send_scan_offload_abort(mvm);
1067 IWL_DEBUG_SCAN(mvm, "Send stop %sscan failed %d\n",
1068 sched ? "offloaded " : "", ret);
1069 iwl_remove_notification(&mvm->notif_wait, &wait_scan_done);
1073 IWL_DEBUG_SCAN(mvm, "Successfully sent stop %sscan\n",
1074 sched ? "offloaded " : "");
1076 ret = iwl_wait_notification(&mvm->notif_wait, &wait_scan_done, 1 * HZ);
1081 * Clear the scan status so the next scan requests will succeed. This
1082 * also ensures the Rx handler doesn't do anything, as the scan was
1083 * stopped from above.
1085 mvm->scan_status = IWL_MVM_SCAN_NONE;
1089 ieee80211_sched_scan_stopped(mvm->hw);
1091 ieee80211_scan_completed(mvm->hw, true);
1097 static void iwl_mvm_unified_scan_fill_tx_cmd(struct iwl_mvm *mvm,
1098 struct iwl_scan_req_tx_cmd *tx_cmd,
1101 tx_cmd[0].tx_flags = cpu_to_le32(TX_CMD_FLG_SEQ_CTL |
1103 tx_cmd[0].rate_n_flags = iwl_mvm_scan_rate_n_flags(mvm,
1104 IEEE80211_BAND_2GHZ,
1106 tx_cmd[0].sta_id = mvm->aux_sta.sta_id;
1108 tx_cmd[1].tx_flags = cpu_to_le32(TX_CMD_FLG_SEQ_CTL |
1110 tx_cmd[1].rate_n_flags = iwl_mvm_scan_rate_n_flags(mvm,
1111 IEEE80211_BAND_5GHZ,
1113 tx_cmd[1].sta_id = mvm->aux_sta.sta_id;
1117 iwl_mvm_lmac_scan_cfg_channels(struct iwl_mvm *mvm,
1118 struct ieee80211_channel **channels,
1119 int n_channels, u32 ssid_bitmap,
1120 struct iwl_scan_req_unified_lmac *cmd)
1122 struct iwl_scan_channel_cfg_lmac *channel_cfg = (void *)&cmd->data;
1125 for (i = 0; i < n_channels; i++) {
1126 channel_cfg[i].channel_num =
1127 cpu_to_le16(channels[i]->hw_value);
1128 channel_cfg[i].iter_count = cpu_to_le16(1);
1129 channel_cfg[i].iter_interval = 0;
1130 channel_cfg[i].flags =
1131 cpu_to_le32(IWL_UNIFIED_SCAN_CHANNEL_PARTIAL |
1137 iwl_mvm_build_unified_scan_probe(struct iwl_mvm *mvm, struct ieee80211_vif *vif,
1138 struct ieee80211_scan_ies *ies,
1139 struct iwl_scan_req_unified_lmac *cmd)
1141 struct iwl_scan_probe_req *preq = (void *)(cmd->data +
1142 sizeof(struct iwl_scan_channel_cfg_lmac) *
1143 mvm->fw->ucode_capa.n_scan_channels);
1144 struct ieee80211_mgmt *frame = (struct ieee80211_mgmt *)preq->buf;
1147 frame->frame_control = cpu_to_le16(IEEE80211_STYPE_PROBE_REQ);
1148 eth_broadcast_addr(frame->da);
1149 memcpy(frame->sa, vif->addr, ETH_ALEN);
1150 eth_broadcast_addr(frame->bssid);
1151 frame->seq_ctrl = 0;
1153 pos = frame->u.probe_req.variable;
1154 *pos++ = WLAN_EID_SSID;
1157 preq->mac_header.offset = 0;
1158 preq->mac_header.len = cpu_to_le16(24 + 2);
1160 memcpy(pos, ies->ies[IEEE80211_BAND_2GHZ],
1161 ies->len[IEEE80211_BAND_2GHZ]);
1162 preq->band_data[0].offset = cpu_to_le16(pos - preq->buf);
1163 preq->band_data[0].len = cpu_to_le16(ies->len[IEEE80211_BAND_2GHZ]);
1164 pos += ies->len[IEEE80211_BAND_2GHZ];
1166 memcpy(pos, ies->ies[IEEE80211_BAND_5GHZ],
1167 ies->len[IEEE80211_BAND_5GHZ]);
1168 preq->band_data[1].offset = cpu_to_le16(pos - preq->buf);
1169 preq->band_data[1].len = cpu_to_le16(ies->len[IEEE80211_BAND_5GHZ]);
1170 pos += ies->len[IEEE80211_BAND_5GHZ];
1172 memcpy(pos, ies->common_ies, ies->common_ie_len);
1173 preq->common_data.offset = cpu_to_le16(pos - preq->buf);
1174 preq->common_data.len = cpu_to_le16(ies->common_ie_len);
1178 iwl_mvm_build_generic_unified_scan_cmd(struct iwl_mvm *mvm,
1179 struct iwl_scan_req_unified_lmac *cmd,
1180 struct iwl_mvm_scan_params *params)
1182 memset(cmd, 0, ksize(cmd));
1183 cmd->active_dwell = params->dwell[IEEE80211_BAND_2GHZ].active;
1184 cmd->passive_dwell = params->dwell[IEEE80211_BAND_2GHZ].passive;
1185 if (params->passive_fragmented)
1186 cmd->fragmented_dwell =
1187 params->dwell[IEEE80211_BAND_2GHZ].passive;
1188 cmd->rx_chain_select = iwl_mvm_scan_rx_chain(mvm);
1189 cmd->max_out_time = cpu_to_le32(params->max_out_time);
1190 cmd->suspend_time = cpu_to_le32(params->suspend_time);
1191 cmd->scan_prio = cpu_to_le32(IWL_SCAN_PRIORITY_HIGH);
1192 cmd->iter_num = cpu_to_le32(1);
1194 if (mvm->fw->ucode_capa.flags & IWL_UCODE_TLV_FLAGS_EBS_SUPPORT &&
1195 mvm->last_ebs_successful) {
1196 cmd->channel_opt[0].flags =
1197 cpu_to_le16(IWL_SCAN_CHANNEL_FLAG_EBS |
1198 IWL_SCAN_CHANNEL_FLAG_EBS_ACCURATE |
1199 IWL_SCAN_CHANNEL_FLAG_CACHE_ADD);
1200 cmd->channel_opt[1].flags =
1201 cpu_to_le16(IWL_SCAN_CHANNEL_FLAG_EBS |
1202 IWL_SCAN_CHANNEL_FLAG_EBS_ACCURATE |
1203 IWL_SCAN_CHANNEL_FLAG_CACHE_ADD);
1206 if (iwl_mvm_rrm_scan_needed(mvm))
1208 cpu_to_le32(IWL_MVM_LMAC_SCAN_FLAGS_RRM_ENABLED);
1211 int iwl_mvm_unified_scan_lmac(struct iwl_mvm *mvm,
1212 struct ieee80211_vif *vif,
1213 struct ieee80211_scan_request *req)
1215 struct iwl_host_cmd hcmd = {
1216 .id = SCAN_OFFLOAD_REQUEST_CMD,
1217 .len = { sizeof(struct iwl_scan_req_unified_lmac) +
1218 sizeof(struct iwl_scan_channel_cfg_lmac) *
1219 mvm->fw->ucode_capa.n_scan_channels +
1220 sizeof(struct iwl_scan_probe_req), },
1221 .data = { mvm->scan_cmd, },
1222 .dataflags = { IWL_HCMD_DFL_NOCOPY, },
1224 struct iwl_scan_req_unified_lmac *cmd = mvm->scan_cmd;
1225 struct iwl_mvm_scan_params params = {};
1227 int ssid_bitmap = 0;
1230 lockdep_assert_held(&mvm->mutex);
1232 /* we should have failed registration if scan_cmd was NULL */
1233 if (WARN_ON(mvm->scan_cmd == NULL))
1236 if (req->req.n_ssids > PROBE_OPTION_MAX ||
1237 req->ies.common_ie_len + req->ies.len[NL80211_BAND_2GHZ] +
1238 req->ies.len[NL80211_BAND_5GHZ] >
1239 iwl_mvm_max_scan_ie_fw_cmd_room(mvm, false) ||
1240 req->req.n_channels > mvm->fw->ucode_capa.n_scan_channels)
1243 mvm->scan_status = IWL_MVM_SCAN_OS;
1245 iwl_mvm_scan_calc_params(mvm, vif, req->req.n_ssids, req->req.flags,
1248 iwl_mvm_build_generic_unified_scan_cmd(mvm, cmd, ¶ms);
1250 cmd->n_channels = (u8)req->req.n_channels;
1252 flags = IWL_MVM_LMAC_SCAN_FLAG_PASS_ALL;
1254 if (req->req.n_ssids == 1 && req->req.ssids[0].ssid_len != 0)
1255 flags |= IWL_MVM_LMAC_SCAN_FLAG_PRE_CONNECTION;
1257 if (params.passive_fragmented)
1258 flags |= IWL_MVM_LMAC_SCAN_FLAG_FRAGMENTED;
1260 if (req->req.n_ssids == 0)
1261 flags |= IWL_MVM_LMAC_SCAN_FLAG_PASSIVE;
1263 cmd->scan_flags |= cpu_to_le32(flags);
1265 cmd->flags = iwl_mvm_scan_rxon_flags(req->req.channels[0]->band);
1266 cmd->filter_flags = cpu_to_le32(MAC_FILTER_ACCEPT_GRP |
1267 MAC_FILTER_IN_BEACON);
1268 iwl_mvm_unified_scan_fill_tx_cmd(mvm, cmd->tx_cmd, req->req.no_cck);
1269 iwl_mvm_scan_fill_ssids(cmd->direct_scan, req->req.ssids,
1270 req->req.n_ssids, 0);
1272 cmd->schedule[0].delay = 0;
1273 cmd->schedule[0].iterations = 1;
1274 cmd->schedule[0].full_scan_mul = 0;
1275 cmd->schedule[1].delay = 0;
1276 cmd->schedule[1].iterations = 0;
1277 cmd->schedule[1].full_scan_mul = 0;
1279 for (i = 1; i <= req->req.n_ssids; i++)
1280 ssid_bitmap |= BIT(i);
1282 iwl_mvm_lmac_scan_cfg_channels(mvm, req->req.channels,
1283 req->req.n_channels, ssid_bitmap,
1286 iwl_mvm_build_unified_scan_probe(mvm, vif, &req->ies, cmd);
1288 ret = iwl_mvm_send_cmd(mvm, &hcmd);
1290 IWL_DEBUG_SCAN(mvm, "Scan request was sent successfully\n");
1293 * If the scan failed, it usually means that the FW was unable
1294 * to allocate the time events. Warn on it, but maybe we
1295 * should try to send the command again with different params.
1297 IWL_ERR(mvm, "Scan failed! ret %d\n", ret);
1298 mvm->scan_status = IWL_MVM_SCAN_NONE;
1304 int iwl_mvm_unified_sched_scan_lmac(struct iwl_mvm *mvm,
1305 struct ieee80211_vif *vif,
1306 struct cfg80211_sched_scan_request *req,
1307 struct ieee80211_scan_ies *ies)
1309 struct iwl_host_cmd hcmd = {
1310 .id = SCAN_OFFLOAD_REQUEST_CMD,
1311 .len = { sizeof(struct iwl_scan_req_unified_lmac) +
1312 sizeof(struct iwl_scan_channel_cfg_lmac) *
1313 mvm->fw->ucode_capa.n_scan_channels +
1314 sizeof(struct iwl_scan_probe_req), },
1315 .data = { mvm->scan_cmd, },
1316 .dataflags = { IWL_HCMD_DFL_NOCOPY, },
1318 struct iwl_scan_req_unified_lmac *cmd = mvm->scan_cmd;
1319 struct iwl_mvm_scan_params params = {};
1321 u32 flags = 0, ssid_bitmap = 0;
1323 lockdep_assert_held(&mvm->mutex);
1325 /* we should have failed registration if scan_cmd was NULL */
1326 if (WARN_ON(mvm->scan_cmd == NULL))
1329 if (req->n_ssids > PROBE_OPTION_MAX ||
1330 ies->common_ie_len + ies->len[NL80211_BAND_2GHZ] +
1331 ies->len[NL80211_BAND_5GHZ] >
1332 iwl_mvm_max_scan_ie_fw_cmd_room(mvm, true) ||
1333 req->n_channels > mvm->fw->ucode_capa.n_scan_channels)
1336 iwl_mvm_scan_calc_params(mvm, vif, req->n_ssids, 0, ¶ms);
1338 iwl_mvm_build_generic_unified_scan_cmd(mvm, cmd, ¶ms);
1340 cmd->n_channels = (u8)req->n_channels;
1342 if (req->n_match_sets && req->match_sets[0].ssid.ssid_len) {
1344 "Sending scheduled scan with filtering, n_match_sets %d\n",
1348 "Sending Scheduled scan without filtering\n");
1349 flags |= IWL_MVM_LMAC_SCAN_FLAG_PASS_ALL;
1352 if (req->n_ssids == 1 && req->ssids[0].ssid_len != 0)
1353 flags |= IWL_MVM_LMAC_SCAN_FLAG_PRE_CONNECTION;
1355 if (params.passive_fragmented)
1356 flags |= IWL_MVM_LMAC_SCAN_FLAG_FRAGMENTED;
1358 if (req->n_ssids == 0)
1359 flags |= IWL_MVM_LMAC_SCAN_FLAG_PASSIVE;
1361 cmd->scan_flags |= cpu_to_le32(flags);
1363 cmd->flags = iwl_mvm_scan_rxon_flags(req->channels[0]->band);
1364 cmd->filter_flags = cpu_to_le32(MAC_FILTER_ACCEPT_GRP |
1365 MAC_FILTER_IN_BEACON);
1366 iwl_mvm_unified_scan_fill_tx_cmd(mvm, cmd->tx_cmd, false);
1367 iwl_scan_offload_build_ssid(req, cmd->direct_scan, &ssid_bitmap, false);
1369 cmd->schedule[0].delay = cpu_to_le16(req->interval / MSEC_PER_SEC);
1370 cmd->schedule[0].iterations = IWL_FAST_SCHED_SCAN_ITERATIONS;
1371 cmd->schedule[0].full_scan_mul = 1;
1373 cmd->schedule[1].delay = cpu_to_le16(req->interval / MSEC_PER_SEC);
1374 cmd->schedule[1].iterations = 0xff;
1375 cmd->schedule[1].full_scan_mul = IWL_FULL_SCAN_MULTIPLIER;
1377 iwl_mvm_lmac_scan_cfg_channels(mvm, req->channels, req->n_channels,
1380 iwl_mvm_build_unified_scan_probe(mvm, vif, ies, cmd);
1382 ret = iwl_mvm_send_cmd(mvm, &hcmd);
1385 "Sched scan request was sent successfully\n");
1388 * If the scan failed, it usually means that the FW was unable
1389 * to allocate the time events. Warn on it, but maybe we
1390 * should try to send the command again with different params.
1392 IWL_ERR(mvm, "Sched scan failed! ret %d\n", ret);
1393 mvm->scan_status = IWL_MVM_SCAN_NONE;
1400 int iwl_mvm_cancel_scan(struct iwl_mvm *mvm)
1402 if (mvm->fw->ucode_capa.api[0] & IWL_UCODE_TLV_API_LMAC_SCAN)
1403 return iwl_mvm_scan_offload_stop(mvm, true);
1404 return iwl_mvm_cancel_regular_scan(mvm);