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
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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 (vif->type != NL80211_IFTYPE_P2P_DEVICE && mvmvif->phy_ctxt &&
274 mvmvif->phy_ctxt->id < MAX_PHYS)
275 *global_bound = true;
278 static void iwl_mvm_scan_calc_params(struct iwl_mvm *mvm,
279 struct ieee80211_vif *vif,
280 int n_ssids, u32 flags,
281 struct iwl_mvm_scan_params *params)
283 bool global_bound = false;
284 enum ieee80211_band band;
285 u8 frag_passive_dwell = 0;
287 ieee80211_iterate_active_interfaces_atomic(mvm->hw,
288 IEEE80211_IFACE_ITER_NORMAL,
289 iwl_mvm_scan_condition_iterator,
295 params->suspend_time = 30;
296 params->max_out_time = 170;
298 if (iwl_mvm_low_latency(mvm)) {
299 if (mvm->fw->ucode_capa.api[0] &
300 IWL_UCODE_TLV_API_FRAGMENTED_SCAN) {
301 params->suspend_time = 105;
302 params->max_out_time = 70;
303 frag_passive_dwell = 20;
305 params->suspend_time = 120;
306 params->max_out_time = 120;
310 if (frag_passive_dwell && (mvm->fw->ucode_capa.api[0] &
311 IWL_UCODE_TLV_API_FRAGMENTED_SCAN)) {
313 * P2P device scan should not be fragmented to avoid negative
314 * impact on P2P device discovery. Configure max_out_time to be
315 * equal to dwell time on passive channel. Take a longest
316 * possible value, one that corresponds to 2GHz band
318 if (vif->type == NL80211_IFTYPE_P2P_DEVICE) {
320 iwl_mvm_get_passive_dwell(IEEE80211_BAND_2GHZ);
321 params->max_out_time = passive_dwell;
323 params->passive_fragmented = true;
327 if (flags & NL80211_SCAN_FLAG_LOW_PRIORITY)
328 params->max_out_time = 200;
332 for (band = IEEE80211_BAND_2GHZ; band < IEEE80211_NUM_BANDS; band++) {
333 if (params->passive_fragmented)
334 params->dwell[band].passive = frag_passive_dwell;
336 params->dwell[band].passive =
337 iwl_mvm_get_passive_dwell(band);
338 params->dwell[band].active = iwl_mvm_get_active_dwell(band,
343 static inline bool iwl_mvm_rrm_scan_needed(struct iwl_mvm *mvm)
345 /* require rrm scan whenever the fw supports it */
346 return mvm->fw->ucode_capa.capa[0] &
347 IWL_UCODE_TLV_CAPA_DS_PARAM_SET_IE_SUPPORT;
350 static int iwl_mvm_max_scan_ie_fw_cmd_room(struct iwl_mvm *mvm,
355 if (mvm->fw->ucode_capa.api[0] & IWL_UCODE_TLV_API_LMAC_SCAN)
356 max_probe_len = SCAN_OFFLOAD_PROBE_REQ_SIZE;
358 max_probe_len = mvm->fw->ucode_capa.max_probe_length;
360 /* we create the 802.11 header and SSID element */
361 max_probe_len -= 24 + 2;
363 /* basic ssid is added only for hw_scan with and old api */
364 if (!(mvm->fw->ucode_capa.flags & IWL_UCODE_TLV_FLAGS_NO_BASIC_SSID) &&
365 !(mvm->fw->ucode_capa.api[0] & IWL_UCODE_TLV_API_LMAC_SCAN) &&
369 return max_probe_len;
372 int iwl_mvm_max_scan_ie_len(struct iwl_mvm *mvm, bool is_sched_scan)
374 int max_ie_len = iwl_mvm_max_scan_ie_fw_cmd_room(mvm, is_sched_scan);
376 if (!(mvm->fw->ucode_capa.api[0] & IWL_UCODE_TLV_API_LMAC_SCAN))
379 /* TODO: [BUG] This function should return the maximum allowed size of
380 * scan IEs, however the LMAC scan api contains both 2GHZ and 5GHZ IEs
381 * in the same command. So the correct implementation of this function
382 * is just iwl_mvm_max_scan_ie_fw_cmd_room() / 2. Currently the scan
383 * command has only 512 bytes and it would leave us with about 240
384 * bytes for scan IEs, which is clearly not enough. So meanwhile
385 * we will report an incorrect value. This may result in a failure to
386 * issue a scan in unified_scan_lmac and unified_sched_scan_lmac
387 * functions with -ENOBUFS, if a large enough probe will be provided.
392 int iwl_mvm_scan_request(struct iwl_mvm *mvm,
393 struct ieee80211_vif *vif,
394 struct cfg80211_scan_request *req)
396 struct iwl_host_cmd hcmd = {
397 .id = SCAN_REQUEST_CMD,
399 .data = { mvm->scan_cmd, },
400 .dataflags = { IWL_HCMD_DFL_NOCOPY, },
402 struct iwl_scan_cmd *cmd = mvm->scan_cmd;
407 bool basic_ssid = !(mvm->fw->ucode_capa.flags &
408 IWL_UCODE_TLV_FLAGS_NO_BASIC_SSID);
409 struct iwl_mvm_scan_params params = {};
411 lockdep_assert_held(&mvm->mutex);
413 /* we should have failed registration if scan_cmd was NULL */
414 if (WARN_ON(mvm->scan_cmd == NULL))
417 IWL_DEBUG_SCAN(mvm, "Handling mac80211 scan request\n");
418 mvm->scan_status = IWL_MVM_SCAN_OS;
419 memset(cmd, 0, ksize(cmd));
421 cmd->channel_count = (u8)req->n_channels;
422 cmd->quiet_time = cpu_to_le16(IWL_ACTIVE_QUIET_TIME);
423 cmd->quiet_plcp_th = cpu_to_le16(IWL_PLCP_QUIET_THRESH);
424 cmd->rxchain_sel_flags = iwl_mvm_scan_rx_chain(mvm);
426 iwl_mvm_scan_calc_params(mvm, vif, req->n_ssids, req->flags, ¶ms);
427 cmd->max_out_time = cpu_to_le32(params.max_out_time);
428 cmd->suspend_time = cpu_to_le32(params.suspend_time);
429 if (params.passive_fragmented)
430 cmd->scan_flags |= SCAN_FLAGS_FRAGMENTED_SCAN;
432 cmd->rxon_flags = iwl_mvm_scan_rxon_flags(req->channels[0]->band);
433 cmd->filter_flags = cpu_to_le32(MAC_FILTER_ACCEPT_GRP |
434 MAC_FILTER_IN_BEACON);
436 if (vif->type == NL80211_IFTYPE_P2P_DEVICE)
437 cmd->type = cpu_to_le32(SCAN_TYPE_DISCOVERY_FORCED);
439 cmd->type = cpu_to_le32(SCAN_TYPE_FORCED);
441 cmd->repeats = cpu_to_le32(1);
444 * If the user asked for passive scan, don't change to active scan if
445 * you see any activity on the channel - remain passive.
447 if (req->n_ssids > 0) {
448 cmd->passive2active = cpu_to_le16(1);
449 cmd->scan_flags |= SCAN_FLAGS_PASSIVE2ACTIVE;
451 ssid = req->ssids[0].ssid;
452 ssid_len = req->ssids[0].ssid_len;
455 cmd->passive2active = 0;
456 cmd->scan_flags &= ~SCAN_FLAGS_PASSIVE2ACTIVE;
459 iwl_mvm_scan_fill_ssids(cmd->direct_scan, req->ssids, req->n_ssids,
462 cmd->tx_cmd.tx_flags = cpu_to_le32(TX_CMD_FLG_SEQ_CTL |
463 3 << TX_CMD_FLG_BT_PRIO_POS);
465 cmd->tx_cmd.sta_id = mvm->aux_sta.sta_id;
466 cmd->tx_cmd.life_time = cpu_to_le32(TX_CMD_LIFE_TIME_INFINITE);
467 cmd->tx_cmd.rate_n_flags =
468 iwl_mvm_scan_rate_n_flags(mvm, req->channels[0]->band,
472 cpu_to_le16(iwl_mvm_fill_probe_req(
473 (struct ieee80211_mgmt *)cmd->data,
475 req->n_ssids, ssid, ssid_len,
476 req->ie, req->ie_len, NULL, 0,
477 mvm->fw->ucode_capa.max_probe_length));
479 iwl_mvm_scan_fill_channels(cmd, req, basic_ssid, ¶ms);
481 cmd->len = cpu_to_le16(sizeof(struct iwl_scan_cmd) +
482 le16_to_cpu(cmd->tx_cmd.len) +
483 (cmd->channel_count * sizeof(struct iwl_scan_channel)));
484 hcmd.len[0] = le16_to_cpu(cmd->len);
486 status = SCAN_RESPONSE_OK;
487 ret = iwl_mvm_send_cmd_status(mvm, &hcmd, &status);
488 if (!ret && status == SCAN_RESPONSE_OK) {
489 IWL_DEBUG_SCAN(mvm, "Scan request was sent successfully\n");
492 * If the scan failed, it usually means that the FW was unable
493 * to allocate the time events. Warn on it, but maybe we
494 * should try to send the command again with different params.
496 IWL_ERR(mvm, "Scan failed! status 0x%x ret %d\n",
498 mvm->scan_status = IWL_MVM_SCAN_NONE;
504 int iwl_mvm_rx_scan_response(struct iwl_mvm *mvm, struct iwl_rx_cmd_buffer *rxb,
505 struct iwl_device_cmd *cmd)
507 struct iwl_rx_packet *pkt = rxb_addr(rxb);
508 struct iwl_cmd_response *resp = (void *)pkt->data;
510 IWL_DEBUG_SCAN(mvm, "Scan response received. status 0x%x\n",
511 le32_to_cpu(resp->status));
515 int iwl_mvm_rx_scan_complete(struct iwl_mvm *mvm, struct iwl_rx_cmd_buffer *rxb,
516 struct iwl_device_cmd *cmd)
518 struct iwl_rx_packet *pkt = rxb_addr(rxb);
519 struct iwl_scan_complete_notif *notif = (void *)pkt->data;
521 lockdep_assert_held(&mvm->mutex);
523 IWL_DEBUG_SCAN(mvm, "Scan complete: status=0x%x scanned channels=%d\n",
524 notif->status, notif->scanned_channels);
526 if (mvm->scan_status == IWL_MVM_SCAN_OS)
527 mvm->scan_status = IWL_MVM_SCAN_NONE;
528 ieee80211_scan_completed(mvm->hw, notif->status != SCAN_COMP_STATUS_OK);
530 iwl_mvm_unref(mvm, IWL_MVM_REF_SCAN);
535 int iwl_mvm_rx_scan_offload_results(struct iwl_mvm *mvm,
536 struct iwl_rx_cmd_buffer *rxb,
537 struct iwl_device_cmd *cmd)
539 struct iwl_rx_packet *pkt = rxb_addr(rxb);
540 u8 client_bitmap = 0;
542 if (!(mvm->fw->ucode_capa.api[0] & IWL_UCODE_TLV_API_LMAC_SCAN)) {
543 struct iwl_sched_scan_results *notif = (void *)pkt->data;
545 client_bitmap = notif->client_bitmap;
548 if (mvm->fw->ucode_capa.api[0] & IWL_UCODE_TLV_API_LMAC_SCAN ||
549 client_bitmap & SCAN_CLIENT_SCHED_SCAN) {
550 if (mvm->scan_status == IWL_MVM_SCAN_SCHED) {
551 IWL_DEBUG_SCAN(mvm, "Scheduled scan results\n");
552 ieee80211_sched_scan_results(mvm->hw);
554 IWL_DEBUG_SCAN(mvm, "Scan results\n");
561 static bool iwl_mvm_scan_abort_notif(struct iwl_notif_wait_data *notif_wait,
562 struct iwl_rx_packet *pkt, void *data)
564 struct iwl_mvm *mvm =
565 container_of(notif_wait, struct iwl_mvm, notif_wait);
566 struct iwl_scan_complete_notif *notif;
569 switch (pkt->hdr.cmd) {
571 resp = (void *)pkt->data;
572 if (*resp == CAN_ABORT_STATUS) {
574 "Scan can be aborted, wait until completion\n");
579 * If scan cannot be aborted, it means that we had a
580 * SCAN_COMPLETE_NOTIFICATION in the pipe and it called
581 * ieee80211_scan_completed already.
583 IWL_DEBUG_SCAN(mvm, "Scan cannot be aborted, exit now: %d\n",
587 case SCAN_COMPLETE_NOTIFICATION:
588 notif = (void *)pkt->data;
589 IWL_DEBUG_SCAN(mvm, "Scan aborted: status 0x%x\n",
599 static int iwl_mvm_cancel_regular_scan(struct iwl_mvm *mvm)
601 struct iwl_notification_wait wait_scan_abort;
602 static const u8 scan_abort_notif[] = { SCAN_ABORT_CMD,
603 SCAN_COMPLETE_NOTIFICATION };
606 iwl_init_notification_wait(&mvm->notif_wait, &wait_scan_abort,
608 ARRAY_SIZE(scan_abort_notif),
609 iwl_mvm_scan_abort_notif, NULL);
611 ret = iwl_mvm_send_cmd_pdu(mvm, SCAN_ABORT_CMD, 0, 0, NULL);
613 IWL_ERR(mvm, "Couldn't send SCAN_ABORT_CMD: %d\n", ret);
614 /* mac80211's state will be cleaned in the nic_restart flow */
615 goto out_remove_notif;
618 return iwl_wait_notification(&mvm->notif_wait, &wait_scan_abort, HZ);
621 iwl_remove_notification(&mvm->notif_wait, &wait_scan_abort);
625 int iwl_mvm_rx_scan_offload_complete_notif(struct iwl_mvm *mvm,
626 struct iwl_rx_cmd_buffer *rxb,
627 struct iwl_device_cmd *cmd)
629 struct iwl_rx_packet *pkt = rxb_addr(rxb);
630 u8 status, ebs_status;
632 if (mvm->fw->ucode_capa.api[0] & IWL_UCODE_TLV_API_LMAC_SCAN) {
633 struct iwl_periodic_scan_complete *scan_notif;
635 scan_notif = (void *)pkt->data;
636 status = scan_notif->status;
637 ebs_status = scan_notif->ebs_status;
639 struct iwl_scan_offload_complete *scan_notif;
641 scan_notif = (void *)pkt->data;
642 status = scan_notif->status;
643 ebs_status = scan_notif->ebs_status;
645 /* scan status must be locked for proper checking */
646 lockdep_assert_held(&mvm->mutex);
649 "%s completed, status %s, EBS status %s\n",
650 mvm->scan_status == IWL_MVM_SCAN_SCHED ?
651 "Scheduled scan" : "Scan",
652 status == IWL_SCAN_OFFLOAD_COMPLETED ?
653 "completed" : "aborted",
654 ebs_status == IWL_SCAN_EBS_SUCCESS ?
655 "success" : "failed");
658 /* only call mac80211 completion if the stop was initiated by FW */
659 if (mvm->scan_status == IWL_MVM_SCAN_SCHED) {
660 mvm->scan_status = IWL_MVM_SCAN_NONE;
661 ieee80211_sched_scan_stopped(mvm->hw);
662 } else if (mvm->scan_status == IWL_MVM_SCAN_OS) {
663 mvm->scan_status = IWL_MVM_SCAN_NONE;
664 ieee80211_scan_completed(mvm->hw,
665 status == IWL_SCAN_OFFLOAD_ABORTED);
666 iwl_mvm_unref(mvm, IWL_MVM_REF_SCAN);
669 mvm->last_ebs_successful = !ebs_status;
674 static void iwl_scan_offload_build_tx_cmd(struct iwl_mvm *mvm,
675 struct ieee80211_vif *vif,
676 struct ieee80211_scan_ies *ies,
677 enum ieee80211_band band,
678 struct iwl_tx_cmd *cmd,
683 cmd->tx_flags = cpu_to_le32(TX_CMD_FLG_SEQ_CTL);
684 cmd->life_time = cpu_to_le32(TX_CMD_LIFE_TIME_INFINITE);
685 cmd->sta_id = mvm->aux_sta.sta_id;
687 cmd->rate_n_flags = iwl_mvm_scan_rate_n_flags(mvm, band, false);
689 cmd_len = iwl_mvm_fill_probe_req((struct ieee80211_mgmt *)data,
692 ies->ies[band], ies->len[band],
693 ies->common_ies, ies->common_ie_len,
694 SCAN_OFFLOAD_PROBE_REQ_SIZE);
695 cmd->len = cpu_to_le16(cmd_len);
698 static void iwl_build_scan_cmd(struct iwl_mvm *mvm,
699 struct ieee80211_vif *vif,
700 struct cfg80211_sched_scan_request *req,
701 struct iwl_scan_offload_cmd *scan,
702 struct iwl_mvm_scan_params *params)
704 scan->channel_count = req->n_channels;
705 scan->quiet_time = cpu_to_le16(IWL_ACTIVE_QUIET_TIME);
706 scan->quiet_plcp_th = cpu_to_le16(IWL_PLCP_QUIET_THRESH);
707 scan->good_CRC_th = IWL_GOOD_CRC_TH_DEFAULT;
708 scan->rx_chain = iwl_mvm_scan_rx_chain(mvm);
710 scan->max_out_time = cpu_to_le32(params->max_out_time);
711 scan->suspend_time = cpu_to_le32(params->suspend_time);
713 scan->filter_flags |= cpu_to_le32(MAC_FILTER_ACCEPT_GRP |
714 MAC_FILTER_IN_BEACON);
715 scan->scan_type = cpu_to_le32(SCAN_TYPE_BACKGROUND);
716 scan->rep_count = cpu_to_le32(1);
718 if (params->passive_fragmented)
719 scan->scan_flags |= SCAN_FLAGS_FRAGMENTED_SCAN;
722 static int iwl_ssid_exist(u8 *ssid, u8 ssid_len, struct iwl_ssid_ie *ssid_list)
726 for (i = 0; i < PROBE_OPTION_MAX; i++) {
727 if (!ssid_list[i].len)
729 if (ssid_list[i].len == ssid_len &&
730 !memcmp(ssid_list->ssid, ssid, ssid_len))
736 static void iwl_scan_offload_build_ssid(struct cfg80211_sched_scan_request *req,
737 struct iwl_ssid_ie *direct_scan,
738 u32 *ssid_bitmap, bool basic_ssid)
744 * copy SSIDs from match list.
745 * iwl_config_sched_scan_profiles() uses the order of these ssids to
748 for (i = 0; i < req->n_match_sets && i < PROBE_OPTION_MAX; i++) {
749 /* skip empty SSID matchsets */
750 if (!req->match_sets[i].ssid.ssid_len)
752 direct_scan[i].id = WLAN_EID_SSID;
753 direct_scan[i].len = req->match_sets[i].ssid.ssid_len;
754 memcpy(direct_scan[i].ssid, req->match_sets[i].ssid.ssid,
758 /* add SSIDs from scan SSID list */
760 for (j = 0; j < req->n_ssids && i < PROBE_OPTION_MAX; j++) {
761 index = iwl_ssid_exist(req->ssids[j].ssid,
762 req->ssids[j].ssid_len,
765 if (!req->ssids[j].ssid_len && basic_ssid)
767 direct_scan[i].id = WLAN_EID_SSID;
768 direct_scan[i].len = req->ssids[j].ssid_len;
769 memcpy(direct_scan[i].ssid, req->ssids[j].ssid,
771 *ssid_bitmap |= BIT(i + 1);
774 *ssid_bitmap |= BIT(index + 1);
779 static void iwl_build_channel_cfg(struct iwl_mvm *mvm,
780 struct cfg80211_sched_scan_request *req,
782 enum ieee80211_band band,
785 struct iwl_mvm_scan_params *params)
787 u32 n_channels = mvm->fw->ucode_capa.n_scan_channels;
788 __le32 *type = (__le32 *)channels_buffer;
789 __le16 *channel_number = (__le16 *)(type + n_channels);
790 __le16 *iter_count = channel_number + n_channels;
791 __le32 *iter_interval = (__le32 *)(iter_count + n_channels);
792 u8 *active_dwell = (u8 *)(iter_interval + n_channels);
793 u8 *passive_dwell = active_dwell + n_channels;
796 for (i = 0; i < req->n_channels; i++) {
797 struct ieee80211_channel *chan = req->channels[i];
799 if (chan->band != band)
805 channel_number[index] = cpu_to_le16(chan->hw_value);
806 active_dwell[index] = params->dwell[band].active;
807 passive_dwell[index] = params->dwell[band].passive;
809 iter_count[index] = cpu_to_le16(1);
810 iter_interval[index] = 0;
812 if (!(chan->flags & IEEE80211_CHAN_NO_IR))
814 cpu_to_le32(IWL_SCAN_OFFLOAD_CHANNEL_ACTIVE);
816 type[index] |= cpu_to_le32(IWL_SCAN_OFFLOAD_CHANNEL_FULL |
817 IWL_SCAN_OFFLOAD_CHANNEL_PARTIAL);
819 if (chan->flags & IEEE80211_CHAN_NO_HT40)
821 cpu_to_le32(IWL_SCAN_OFFLOAD_CHANNEL_NARROW);
823 /* scan for all SSIDs from req->ssids */
824 type[index] |= cpu_to_le32(ssid_bitmap);
828 int iwl_mvm_config_sched_scan(struct iwl_mvm *mvm,
829 struct ieee80211_vif *vif,
830 struct cfg80211_sched_scan_request *req,
831 struct ieee80211_scan_ies *ies)
833 int band_2ghz = mvm->nvm_data->bands[IEEE80211_BAND_2GHZ].n_channels;
834 int band_5ghz = mvm->nvm_data->bands[IEEE80211_BAND_5GHZ].n_channels;
840 bool basic_ssid = !(mvm->fw->ucode_capa.flags &
841 IWL_UCODE_TLV_FLAGS_NO_BASIC_SSID);
843 struct iwl_scan_offload_cfg *scan_cfg;
844 struct iwl_host_cmd cmd = {
845 .id = SCAN_OFFLOAD_CONFIG_CMD,
847 struct iwl_mvm_scan_params params = {};
849 lockdep_assert_held(&mvm->mutex);
851 cmd_len = sizeof(struct iwl_scan_offload_cfg) +
852 mvm->fw->ucode_capa.n_scan_channels * IWL_SCAN_CHAN_SIZE +
853 2 * SCAN_OFFLOAD_PROBE_REQ_SIZE;
855 scan_cfg = kzalloc(cmd_len, GFP_KERNEL);
859 probes = scan_cfg->data +
860 mvm->fw->ucode_capa.n_scan_channels * IWL_SCAN_CHAN_SIZE;
862 iwl_mvm_scan_calc_params(mvm, vif, req->n_ssids, 0, ¶ms);
863 iwl_build_scan_cmd(mvm, vif, req, &scan_cfg->scan_cmd, ¶ms);
864 scan_cfg->scan_cmd.len = cpu_to_le16(cmd_len);
866 iwl_scan_offload_build_ssid(req, scan_cfg->scan_cmd.direct_scan,
867 &ssid_bitmap, basic_ssid);
868 /* build tx frames for supported bands */
870 iwl_scan_offload_build_tx_cmd(mvm, vif, ies,
872 &scan_cfg->scan_cmd.tx_cmd[0],
874 iwl_build_channel_cfg(mvm, req, scan_cfg->data,
875 IEEE80211_BAND_2GHZ, &head,
876 ssid_bitmap, ¶ms);
879 iwl_scan_offload_build_tx_cmd(mvm, vif, ies,
881 &scan_cfg->scan_cmd.tx_cmd[1],
883 SCAN_OFFLOAD_PROBE_REQ_SIZE);
884 iwl_build_channel_cfg(mvm, req, scan_cfg->data,
885 IEEE80211_BAND_5GHZ, &head,
886 ssid_bitmap, ¶ms);
889 cmd.data[0] = scan_cfg;
890 cmd.len[0] = cmd_len;
891 cmd.dataflags[0] = IWL_HCMD_DFL_NOCOPY;
893 IWL_DEBUG_SCAN(mvm, "Sending scheduled scan config\n");
895 ret = iwl_mvm_send_cmd(mvm, &cmd);
900 int iwl_mvm_config_sched_scan_profiles(struct iwl_mvm *mvm,
901 struct cfg80211_sched_scan_request *req)
903 struct iwl_scan_offload_profile *profile;
904 struct iwl_scan_offload_profile_cfg *profile_cfg;
905 struct iwl_scan_offload_blacklist *blacklist;
906 struct iwl_host_cmd cmd = {
907 .id = SCAN_OFFLOAD_UPDATE_PROFILES_CMD,
908 .len[1] = sizeof(*profile_cfg),
909 .dataflags[0] = IWL_HCMD_DFL_NOCOPY,
910 .dataflags[1] = IWL_HCMD_DFL_NOCOPY,
916 if (WARN_ON(req->n_match_sets > IWL_SCAN_MAX_PROFILES))
919 if (mvm->fw->ucode_capa.flags & IWL_UCODE_TLV_FLAGS_SHORT_BL)
920 blacklist_len = IWL_SCAN_SHORT_BLACKLIST_LEN;
922 blacklist_len = IWL_SCAN_MAX_BLACKLIST_LEN;
924 blacklist = kzalloc(sizeof(*blacklist) * blacklist_len, GFP_KERNEL);
928 profile_cfg = kzalloc(sizeof(*profile_cfg), GFP_KERNEL);
934 cmd.data[0] = blacklist;
935 cmd.len[0] = sizeof(*blacklist) * blacklist_len;
936 cmd.data[1] = profile_cfg;
938 /* No blacklist configuration */
940 profile_cfg->num_profiles = req->n_match_sets;
941 profile_cfg->active_clients = SCAN_CLIENT_SCHED_SCAN;
942 profile_cfg->pass_match = SCAN_CLIENT_SCHED_SCAN;
943 profile_cfg->match_notify = SCAN_CLIENT_SCHED_SCAN;
944 if (!req->n_match_sets || !req->match_sets[0].ssid.ssid_len)
945 profile_cfg->any_beacon_notify = SCAN_CLIENT_SCHED_SCAN;
947 for (i = 0; i < req->n_match_sets; i++) {
948 profile = &profile_cfg->profiles[i];
949 profile->ssid_index = i;
950 /* Support any cipher and auth algorithm */
951 profile->unicast_cipher = 0xff;
952 profile->auth_alg = 0xff;
953 profile->network_type = IWL_NETWORK_TYPE_ANY;
954 profile->band_selection = IWL_SCAN_OFFLOAD_SELECT_ANY;
955 profile->client_bitmap = SCAN_CLIENT_SCHED_SCAN;
958 IWL_DEBUG_SCAN(mvm, "Sending scheduled scan profile config\n");
960 ret = iwl_mvm_send_cmd(mvm, &cmd);
968 int iwl_mvm_sched_scan_start(struct iwl_mvm *mvm,
969 struct cfg80211_sched_scan_request *req)
971 struct iwl_scan_offload_req scan_req = {
972 .watchdog = IWL_SCHED_SCAN_WATCHDOG,
974 .schedule_line[0].iterations = IWL_FAST_SCHED_SCAN_ITERATIONS,
975 .schedule_line[0].delay = cpu_to_le16(req->interval / 1000),
976 .schedule_line[0].full_scan_mul = 1,
978 .schedule_line[1].iterations = 0xff,
979 .schedule_line[1].delay = cpu_to_le16(req->interval / 1000),
980 .schedule_line[1].full_scan_mul = IWL_FULL_SCAN_MULTIPLIER,
983 if (req->n_match_sets && req->match_sets[0].ssid.ssid_len) {
985 "Sending scheduled scan with filtering, filter len %d\n",
989 "Sending Scheduled scan without filtering\n");
990 scan_req.flags |= cpu_to_le16(IWL_SCAN_OFFLOAD_FLAG_PASS_ALL);
993 if (mvm->last_ebs_successful &&
994 mvm->fw->ucode_capa.flags & IWL_UCODE_TLV_FLAGS_EBS_SUPPORT)
996 cpu_to_le16(IWL_SCAN_OFFLOAD_FLAG_EBS_ACCURATE_MODE);
998 return iwl_mvm_send_cmd_pdu(mvm, SCAN_OFFLOAD_REQUEST_CMD, 0,
999 sizeof(scan_req), &scan_req);
1002 int iwl_mvm_scan_offload_start(struct iwl_mvm *mvm,
1003 struct ieee80211_vif *vif,
1004 struct cfg80211_sched_scan_request *req,
1005 struct ieee80211_scan_ies *ies)
1009 if ((mvm->fw->ucode_capa.api[0] & IWL_UCODE_TLV_API_LMAC_SCAN)) {
1010 ret = iwl_mvm_config_sched_scan_profiles(mvm, req);
1013 ret = iwl_mvm_unified_sched_scan_lmac(mvm, vif, req, ies);
1015 ret = iwl_mvm_config_sched_scan(mvm, vif, req, ies);
1018 ret = iwl_mvm_config_sched_scan_profiles(mvm, req);
1021 ret = iwl_mvm_sched_scan_start(mvm, req);
1027 static int iwl_mvm_send_scan_offload_abort(struct iwl_mvm *mvm)
1030 struct iwl_host_cmd cmd = {
1031 .id = SCAN_OFFLOAD_ABORT_CMD,
1035 /* Exit instantly with error when device is not ready
1036 * to receive scan abort command or it does not perform
1037 * scheduled scan currently */
1038 if (mvm->scan_status != IWL_MVM_SCAN_SCHED &&
1039 (!(mvm->fw->ucode_capa.api[0] & IWL_UCODE_TLV_API_LMAC_SCAN) ||
1040 mvm->scan_status != IWL_MVM_SCAN_OS))
1043 ret = iwl_mvm_send_cmd_status(mvm, &cmd, &status);
1047 if (status != CAN_ABORT_STATUS) {
1049 * The scan abort will return 1 for success or
1050 * 2 for "failure". A failure condition can be
1051 * due to simply not being in an active scan which
1052 * can occur if we send the scan abort before the
1053 * microcode has notified us that a scan is completed.
1055 IWL_DEBUG_SCAN(mvm, "SCAN OFFLOAD ABORT ret %d.\n", status);
1062 int iwl_mvm_scan_offload_stop(struct iwl_mvm *mvm, bool notify)
1065 struct iwl_notification_wait wait_scan_done;
1066 static const u8 scan_done_notif[] = { SCAN_OFFLOAD_COMPLETE, };
1067 bool sched = mvm->scan_status == IWL_MVM_SCAN_SCHED;
1069 lockdep_assert_held(&mvm->mutex);
1071 if (mvm->scan_status != IWL_MVM_SCAN_SCHED &&
1072 (!(mvm->fw->ucode_capa.api[0] & IWL_UCODE_TLV_API_LMAC_SCAN) ||
1073 mvm->scan_status != IWL_MVM_SCAN_OS)) {
1074 IWL_DEBUG_SCAN(mvm, "No scan to stop\n");
1078 iwl_init_notification_wait(&mvm->notif_wait, &wait_scan_done,
1080 ARRAY_SIZE(scan_done_notif),
1083 ret = iwl_mvm_send_scan_offload_abort(mvm);
1085 IWL_DEBUG_SCAN(mvm, "Send stop %sscan failed %d\n",
1086 sched ? "offloaded " : "", ret);
1087 iwl_remove_notification(&mvm->notif_wait, &wait_scan_done);
1091 IWL_DEBUG_SCAN(mvm, "Successfully sent stop %sscan\n",
1092 sched ? "offloaded " : "");
1094 ret = iwl_wait_notification(&mvm->notif_wait, &wait_scan_done, 1 * HZ);
1099 * Clear the scan status so the next scan requests will succeed. This
1100 * also ensures the Rx handler doesn't do anything, as the scan was
1101 * stopped from above. Since the rx handler won't do anything now,
1102 * we have to release the scan reference here.
1104 if (mvm->scan_status == IWL_MVM_SCAN_OS)
1105 iwl_mvm_unref(mvm, IWL_MVM_REF_SCAN);
1107 mvm->scan_status = IWL_MVM_SCAN_NONE;
1111 ieee80211_sched_scan_stopped(mvm->hw);
1113 ieee80211_scan_completed(mvm->hw, true);
1119 static void iwl_mvm_unified_scan_fill_tx_cmd(struct iwl_mvm *mvm,
1120 struct iwl_scan_req_tx_cmd *tx_cmd,
1123 tx_cmd[0].tx_flags = cpu_to_le32(TX_CMD_FLG_SEQ_CTL |
1125 tx_cmd[0].rate_n_flags = iwl_mvm_scan_rate_n_flags(mvm,
1126 IEEE80211_BAND_2GHZ,
1128 tx_cmd[0].sta_id = mvm->aux_sta.sta_id;
1130 tx_cmd[1].tx_flags = cpu_to_le32(TX_CMD_FLG_SEQ_CTL |
1132 tx_cmd[1].rate_n_flags = iwl_mvm_scan_rate_n_flags(mvm,
1133 IEEE80211_BAND_5GHZ,
1135 tx_cmd[1].sta_id = mvm->aux_sta.sta_id;
1139 iwl_mvm_lmac_scan_cfg_channels(struct iwl_mvm *mvm,
1140 struct ieee80211_channel **channels,
1141 int n_channels, u32 ssid_bitmap,
1142 struct iwl_scan_req_unified_lmac *cmd)
1144 struct iwl_scan_channel_cfg_lmac *channel_cfg = (void *)&cmd->data;
1147 for (i = 0; i < n_channels; i++) {
1148 channel_cfg[i].channel_num =
1149 cpu_to_le16(channels[i]->hw_value);
1150 channel_cfg[i].iter_count = cpu_to_le16(1);
1151 channel_cfg[i].iter_interval = 0;
1152 channel_cfg[i].flags =
1153 cpu_to_le32(IWL_UNIFIED_SCAN_CHANNEL_PARTIAL |
1159 iwl_mvm_build_unified_scan_probe(struct iwl_mvm *mvm, struct ieee80211_vif *vif,
1160 struct ieee80211_scan_ies *ies,
1161 struct iwl_scan_req_unified_lmac *cmd)
1163 struct iwl_scan_probe_req *preq = (void *)(cmd->data +
1164 sizeof(struct iwl_scan_channel_cfg_lmac) *
1165 mvm->fw->ucode_capa.n_scan_channels);
1166 struct ieee80211_mgmt *frame = (struct ieee80211_mgmt *)preq->buf;
1169 frame->frame_control = cpu_to_le16(IEEE80211_STYPE_PROBE_REQ);
1170 eth_broadcast_addr(frame->da);
1171 memcpy(frame->sa, vif->addr, ETH_ALEN);
1172 eth_broadcast_addr(frame->bssid);
1173 frame->seq_ctrl = 0;
1175 pos = frame->u.probe_req.variable;
1176 *pos++ = WLAN_EID_SSID;
1179 preq->mac_header.offset = 0;
1180 preq->mac_header.len = cpu_to_le16(24 + 2);
1182 memcpy(pos, ies->ies[IEEE80211_BAND_2GHZ],
1183 ies->len[IEEE80211_BAND_2GHZ]);
1184 preq->band_data[0].offset = cpu_to_le16(pos - preq->buf);
1185 preq->band_data[0].len = cpu_to_le16(ies->len[IEEE80211_BAND_2GHZ]);
1186 pos += ies->len[IEEE80211_BAND_2GHZ];
1188 memcpy(pos, ies->ies[IEEE80211_BAND_5GHZ],
1189 ies->len[IEEE80211_BAND_5GHZ]);
1190 preq->band_data[1].offset = cpu_to_le16(pos - preq->buf);
1191 preq->band_data[1].len = cpu_to_le16(ies->len[IEEE80211_BAND_5GHZ]);
1192 pos += ies->len[IEEE80211_BAND_5GHZ];
1194 memcpy(pos, ies->common_ies, ies->common_ie_len);
1195 preq->common_data.offset = cpu_to_le16(pos - preq->buf);
1196 preq->common_data.len = cpu_to_le16(ies->common_ie_len);
1200 iwl_mvm_build_generic_unified_scan_cmd(struct iwl_mvm *mvm,
1201 struct iwl_scan_req_unified_lmac *cmd,
1202 struct iwl_mvm_scan_params *params)
1204 memset(cmd, 0, ksize(cmd));
1205 cmd->active_dwell = params->dwell[IEEE80211_BAND_2GHZ].active;
1206 cmd->passive_dwell = params->dwell[IEEE80211_BAND_2GHZ].passive;
1207 if (params->passive_fragmented)
1208 cmd->fragmented_dwell =
1209 params->dwell[IEEE80211_BAND_2GHZ].passive;
1210 cmd->rx_chain_select = iwl_mvm_scan_rx_chain(mvm);
1211 cmd->max_out_time = cpu_to_le32(params->max_out_time);
1212 cmd->suspend_time = cpu_to_le32(params->suspend_time);
1213 cmd->scan_prio = cpu_to_le32(IWL_SCAN_PRIORITY_HIGH);
1214 cmd->iter_num = cpu_to_le32(1);
1216 if (mvm->fw->ucode_capa.flags & IWL_UCODE_TLV_FLAGS_EBS_SUPPORT &&
1217 mvm->last_ebs_successful) {
1218 cmd->channel_opt[0].flags =
1219 cpu_to_le16(IWL_SCAN_CHANNEL_FLAG_EBS |
1220 IWL_SCAN_CHANNEL_FLAG_EBS_ACCURATE |
1221 IWL_SCAN_CHANNEL_FLAG_CACHE_ADD);
1222 cmd->channel_opt[1].flags =
1223 cpu_to_le16(IWL_SCAN_CHANNEL_FLAG_EBS |
1224 IWL_SCAN_CHANNEL_FLAG_EBS_ACCURATE |
1225 IWL_SCAN_CHANNEL_FLAG_CACHE_ADD);
1228 if (iwl_mvm_rrm_scan_needed(mvm))
1230 cpu_to_le32(IWL_MVM_LMAC_SCAN_FLAGS_RRM_ENABLED);
1233 int iwl_mvm_unified_scan_lmac(struct iwl_mvm *mvm,
1234 struct ieee80211_vif *vif,
1235 struct ieee80211_scan_request *req)
1237 struct iwl_host_cmd hcmd = {
1238 .id = SCAN_OFFLOAD_REQUEST_CMD,
1239 .len = { sizeof(struct iwl_scan_req_unified_lmac) +
1240 sizeof(struct iwl_scan_channel_cfg_lmac) *
1241 mvm->fw->ucode_capa.n_scan_channels +
1242 sizeof(struct iwl_scan_probe_req), },
1243 .data = { mvm->scan_cmd, },
1244 .dataflags = { IWL_HCMD_DFL_NOCOPY, },
1246 struct iwl_scan_req_unified_lmac *cmd = mvm->scan_cmd;
1247 struct iwl_mvm_scan_params params = {};
1249 int ssid_bitmap = 0;
1252 lockdep_assert_held(&mvm->mutex);
1254 /* we should have failed registration if scan_cmd was NULL */
1255 if (WARN_ON(mvm->scan_cmd == NULL))
1258 if (req->req.n_ssids > PROBE_OPTION_MAX ||
1259 req->ies.common_ie_len + req->ies.len[NL80211_BAND_2GHZ] +
1260 req->ies.len[NL80211_BAND_5GHZ] >
1261 iwl_mvm_max_scan_ie_fw_cmd_room(mvm, false) ||
1262 req->req.n_channels > mvm->fw->ucode_capa.n_scan_channels)
1265 mvm->scan_status = IWL_MVM_SCAN_OS;
1267 iwl_mvm_scan_calc_params(mvm, vif, req->req.n_ssids, req->req.flags,
1270 iwl_mvm_build_generic_unified_scan_cmd(mvm, cmd, ¶ms);
1272 cmd->n_channels = (u8)req->req.n_channels;
1274 flags = IWL_MVM_LMAC_SCAN_FLAG_PASS_ALL;
1276 if (req->req.n_ssids == 1 && req->req.ssids[0].ssid_len != 0)
1277 flags |= IWL_MVM_LMAC_SCAN_FLAG_PRE_CONNECTION;
1279 if (params.passive_fragmented)
1280 flags |= IWL_MVM_LMAC_SCAN_FLAG_FRAGMENTED;
1282 if (req->req.n_ssids == 0)
1283 flags |= IWL_MVM_LMAC_SCAN_FLAG_PASSIVE;
1285 cmd->scan_flags |= cpu_to_le32(flags);
1287 cmd->flags = iwl_mvm_scan_rxon_flags(req->req.channels[0]->band);
1288 cmd->filter_flags = cpu_to_le32(MAC_FILTER_ACCEPT_GRP |
1289 MAC_FILTER_IN_BEACON);
1290 iwl_mvm_unified_scan_fill_tx_cmd(mvm, cmd->tx_cmd, req->req.no_cck);
1291 iwl_mvm_scan_fill_ssids(cmd->direct_scan, req->req.ssids,
1292 req->req.n_ssids, 0);
1294 cmd->schedule[0].delay = 0;
1295 cmd->schedule[0].iterations = 1;
1296 cmd->schedule[0].full_scan_mul = 0;
1297 cmd->schedule[1].delay = 0;
1298 cmd->schedule[1].iterations = 0;
1299 cmd->schedule[1].full_scan_mul = 0;
1301 for (i = 1; i <= req->req.n_ssids; i++)
1302 ssid_bitmap |= BIT(i);
1304 iwl_mvm_lmac_scan_cfg_channels(mvm, req->req.channels,
1305 req->req.n_channels, ssid_bitmap,
1308 iwl_mvm_build_unified_scan_probe(mvm, vif, &req->ies, cmd);
1310 ret = iwl_mvm_send_cmd(mvm, &hcmd);
1312 IWL_DEBUG_SCAN(mvm, "Scan request was sent successfully\n");
1315 * If the scan failed, it usually means that the FW was unable
1316 * to allocate the time events. Warn on it, but maybe we
1317 * should try to send the command again with different params.
1319 IWL_ERR(mvm, "Scan failed! ret %d\n", ret);
1320 mvm->scan_status = IWL_MVM_SCAN_NONE;
1326 int iwl_mvm_unified_sched_scan_lmac(struct iwl_mvm *mvm,
1327 struct ieee80211_vif *vif,
1328 struct cfg80211_sched_scan_request *req,
1329 struct ieee80211_scan_ies *ies)
1331 struct iwl_host_cmd hcmd = {
1332 .id = SCAN_OFFLOAD_REQUEST_CMD,
1333 .len = { sizeof(struct iwl_scan_req_unified_lmac) +
1334 sizeof(struct iwl_scan_channel_cfg_lmac) *
1335 mvm->fw->ucode_capa.n_scan_channels +
1336 sizeof(struct iwl_scan_probe_req), },
1337 .data = { mvm->scan_cmd, },
1338 .dataflags = { IWL_HCMD_DFL_NOCOPY, },
1340 struct iwl_scan_req_unified_lmac *cmd = mvm->scan_cmd;
1341 struct iwl_mvm_scan_params params = {};
1343 u32 flags = 0, ssid_bitmap = 0;
1345 lockdep_assert_held(&mvm->mutex);
1347 /* we should have failed registration if scan_cmd was NULL */
1348 if (WARN_ON(mvm->scan_cmd == NULL))
1351 if (req->n_ssids > PROBE_OPTION_MAX ||
1352 ies->common_ie_len + ies->len[NL80211_BAND_2GHZ] +
1353 ies->len[NL80211_BAND_5GHZ] >
1354 iwl_mvm_max_scan_ie_fw_cmd_room(mvm, true) ||
1355 req->n_channels > mvm->fw->ucode_capa.n_scan_channels)
1358 iwl_mvm_scan_calc_params(mvm, vif, req->n_ssids, 0, ¶ms);
1360 iwl_mvm_build_generic_unified_scan_cmd(mvm, cmd, ¶ms);
1362 cmd->n_channels = (u8)req->n_channels;
1364 if (req->n_match_sets && req->match_sets[0].ssid.ssid_len) {
1366 "Sending scheduled scan with filtering, n_match_sets %d\n",
1370 "Sending Scheduled scan without filtering\n");
1371 flags |= IWL_MVM_LMAC_SCAN_FLAG_PASS_ALL;
1374 if (req->n_ssids == 1 && req->ssids[0].ssid_len != 0)
1375 flags |= IWL_MVM_LMAC_SCAN_FLAG_PRE_CONNECTION;
1377 if (params.passive_fragmented)
1378 flags |= IWL_MVM_LMAC_SCAN_FLAG_FRAGMENTED;
1380 if (req->n_ssids == 0)
1381 flags |= IWL_MVM_LMAC_SCAN_FLAG_PASSIVE;
1383 cmd->scan_flags |= cpu_to_le32(flags);
1385 cmd->flags = iwl_mvm_scan_rxon_flags(req->channels[0]->band);
1386 cmd->filter_flags = cpu_to_le32(MAC_FILTER_ACCEPT_GRP |
1387 MAC_FILTER_IN_BEACON);
1388 iwl_mvm_unified_scan_fill_tx_cmd(mvm, cmd->tx_cmd, false);
1389 iwl_scan_offload_build_ssid(req, cmd->direct_scan, &ssid_bitmap, false);
1391 cmd->schedule[0].delay = cpu_to_le16(req->interval / MSEC_PER_SEC);
1392 cmd->schedule[0].iterations = IWL_FAST_SCHED_SCAN_ITERATIONS;
1393 cmd->schedule[0].full_scan_mul = 1;
1395 cmd->schedule[1].delay = cpu_to_le16(req->interval / MSEC_PER_SEC);
1396 cmd->schedule[1].iterations = 0xff;
1397 cmd->schedule[1].full_scan_mul = IWL_FULL_SCAN_MULTIPLIER;
1399 iwl_mvm_lmac_scan_cfg_channels(mvm, req->channels, req->n_channels,
1402 iwl_mvm_build_unified_scan_probe(mvm, vif, ies, cmd);
1404 ret = iwl_mvm_send_cmd(mvm, &hcmd);
1407 "Sched scan request was sent successfully\n");
1410 * If the scan failed, it usually means that the FW was unable
1411 * to allocate the time events. Warn on it, but maybe we
1412 * should try to send the command again with different params.
1414 IWL_ERR(mvm, "Sched scan failed! ret %d\n", ret);
1415 mvm->scan_status = IWL_MVM_SCAN_NONE;
1422 int iwl_mvm_cancel_scan(struct iwl_mvm *mvm)
1424 if (mvm->scan_status == IWL_MVM_SCAN_NONE)
1427 if (iwl_mvm_is_radio_killed(mvm)) {
1428 ieee80211_scan_completed(mvm->hw, true);
1429 iwl_mvm_unref(mvm, IWL_MVM_REF_SCAN);
1430 mvm->scan_status = IWL_MVM_SCAN_NONE;
1434 if (mvm->fw->ucode_capa.api[0] & IWL_UCODE_TLV_API_LMAC_SCAN)
1435 return iwl_mvm_scan_offload_stop(mvm, true);
1436 return iwl_mvm_cancel_regular_scan(mvm);