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.
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.
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.
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,
24 * The full GNU General Public License is included in this distribution
25 * in the file called COPYING.
27 * Contact Information:
28 * Intel Linux Wireless <ilw@linux.intel.com>
29 * Intel Corporation, 5200 N.E. Elam Young Parkway, Hillsboro, OR 97124-6497
33 * Copyright(c) 2012 - 2014 Intel Corporation. All rights reserved.
34 * All rights reserved.
36 * Redistribution and use in source and binary forms, with or without
37 * modification, are permitted provided that the following conditions
40 * * Redistributions of source code must retain the above copyright
41 * notice, this list of conditions and the following disclaimer.
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43 * notice, this list of conditions and the following disclaimer in
44 * the documentation and/or other materials provided with the
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47 * contributors may be used to endorse or promote products derived
48 * from this software without specific prior written permission.
50 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
51 * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
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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.
62 *****************************************************************************/
64 #include <linux/etherdevice.h>
65 #include <net/mac80211.h>
68 #include "iwl-eeprom-parse.h"
69 #include "fw-api-scan.h"
71 #define IWL_PLCP_QUIET_THRESH 1
72 #define IWL_ACTIVE_QUIET_TIME 10
74 struct iwl_mvm_scan_params {
77 bool passive_fragmented;
81 } dwell[IEEE80211_NUM_BANDS];
84 static inline __le16 iwl_mvm_scan_rx_chain(struct iwl_mvm *mvm)
89 if (mvm->scan_rx_ant != ANT_NONE)
90 rx_ant = mvm->scan_rx_ant;
92 rx_ant = mvm->fw->valid_rx_ant;
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);
101 iwl_mvm_scan_rxon_flags(struct cfg80211_scan_request *req)
103 if (req->channels[0]->band == IEEE80211_BAND_2GHZ)
104 return cpu_to_le32(PHY_BAND_24);
106 return cpu_to_le32(PHY_BAND_5);
110 iwl_mvm_scan_rate_n_flags(struct iwl_mvm *mvm, enum ieee80211_band band,
115 mvm->scan_last_antenna_idx =
116 iwl_mvm_next_antenna(mvm, mvm->fw->valid_tx_ant,
117 mvm->scan_last_antenna_idx);
118 tx_ant = BIT(mvm->scan_last_antenna_idx) << RATE_MCS_ANT_POS;
120 if (band == IEEE80211_BAND_2GHZ && !no_cck)
121 return cpu_to_le32(IWL_RATE_1M_PLCP | RATE_MCS_CCK_MSK |
124 return cpu_to_le32(IWL_RATE_6M_PLCP | tx_ant);
128 * We insert the SSIDs in an inverted order, because the FW will
129 * invert it back. The most prioritized SSID, which is first in the
130 * request list, is not copied here, but inserted directly to the probe
133 static void iwl_mvm_scan_fill_ssids(struct iwl_scan_cmd *cmd,
134 struct cfg80211_scan_request *req,
139 for (req_idx = req->n_ssids - 1, fw_idx = 0; req_idx >= first;
140 req_idx--, fw_idx++) {
141 cmd->direct_scan[fw_idx].id = WLAN_EID_SSID;
142 cmd->direct_scan[fw_idx].len = req->ssids[req_idx].ssid_len;
143 memcpy(cmd->direct_scan[fw_idx].ssid,
144 req->ssids[req_idx].ssid,
145 req->ssids[req_idx].ssid_len);
150 * If req->n_ssids > 0, it means we should do an active scan.
151 * In case of active scan w/o directed scan, we receive a zero-length SSID
152 * just to notify that this scan is active and not passive.
153 * In order to notify the FW of the number of SSIDs we wish to scan (including
154 * the zero-length one), we need to set the corresponding bits in chan->type,
155 * one for each SSID, and set the active bit (first). If the first SSID is
156 * already included in the probe template, so we need to set only
157 * req->n_ssids - 1 bits in addition to the first bit.
159 static u16 iwl_mvm_get_active_dwell(enum ieee80211_band band, int n_ssids)
161 if (band == IEEE80211_BAND_2GHZ)
162 return 30 + 3 * (n_ssids + 1);
163 return 20 + 2 * (n_ssids + 1);
166 static u16 iwl_mvm_get_passive_dwell(enum ieee80211_band band)
168 return band == IEEE80211_BAND_2GHZ ? 100 + 20 : 100 + 10;
171 static void iwl_mvm_scan_fill_channels(struct iwl_scan_cmd *cmd,
172 struct cfg80211_scan_request *req,
174 struct iwl_mvm_scan_params *params)
176 struct iwl_scan_channel *chan = (struct iwl_scan_channel *)
177 (cmd->data + le16_to_cpu(cmd->tx_cmd.len));
179 int type = BIT(req->n_ssids) - 1;
180 enum ieee80211_band band = req->channels[0]->band;
183 type |= BIT(req->n_ssids);
185 for (i = 0; i < cmd->channel_count; i++) {
186 chan->channel = cpu_to_le16(req->channels[i]->hw_value);
187 chan->type = cpu_to_le32(type);
188 if (req->channels[i]->flags & IEEE80211_CHAN_NO_IR)
189 chan->type &= cpu_to_le32(~SCAN_CHANNEL_TYPE_ACTIVE);
190 chan->active_dwell = cpu_to_le16(params->dwell[band].active);
191 chan->passive_dwell = cpu_to_le16(params->dwell[band].passive);
192 chan->iteration_count = cpu_to_le16(1);
198 * Fill in probe request with the following parameters:
199 * TA is our vif HW address, which mac80211 ensures we have.
200 * Packet is broadcasted, so this is both SA and DA.
201 * The probe request IE is made out of two: first comes the most prioritized
202 * SSID if a directed scan is requested. Second comes whatever extra
203 * information was given to us as the scan request IE.
205 static u16 iwl_mvm_fill_probe_req(struct ieee80211_mgmt *frame, const u8 *ta,
206 int n_ssids, const u8 *ssid, int ssid_len,
207 const u8 *ie, int ie_len,
213 /* Make sure there is enough space for the probe request,
214 * two mandatory IEs and the data */
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);
227 /* for passive scans, no need to fill anything */
231 /* points to the payload of the request */
232 pos = &frame->u.probe_req.variable[0];
234 /* fill in our SSID IE */
235 left -= ssid_len + 2;
238 *pos++ = WLAN_EID_SSID;
240 if (ssid && ssid_len) { /* ssid_len may be == 0 even if ssid is valid */
241 memcpy(pos, ssid, ssid_len);
247 if (WARN_ON(left < ie_len))
251 memcpy(pos, ie, ie_len);
258 static void iwl_mvm_scan_condition_iterator(void *data, u8 *mac,
259 struct ieee80211_vif *vif)
261 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
262 bool *global_bound = data;
264 if (mvmvif->phy_ctxt && mvmvif->phy_ctxt->id < MAX_PHYS)
265 *global_bound = true;
268 static void iwl_mvm_scan_calc_params(struct iwl_mvm *mvm,
269 struct ieee80211_vif *vif,
271 struct iwl_mvm_scan_params *params)
273 bool global_bound = false;
274 enum ieee80211_band band;
276 ieee80211_iterate_active_interfaces_atomic(mvm->hw,
277 IEEE80211_IFACE_ITER_NORMAL,
278 iwl_mvm_scan_condition_iterator,
284 params->suspend_time = 100;
285 params->max_out_time = 600;
287 if (iwl_mvm_low_latency(mvm)) {
288 params->suspend_time = 250;
289 params->max_out_time = 250;
294 for (band = IEEE80211_BAND_2GHZ; band < IEEE80211_NUM_BANDS; band++) {
295 params->dwell[band].passive = iwl_mvm_get_passive_dwell(band);
296 params->dwell[band].active = iwl_mvm_get_active_dwell(band,
301 int iwl_mvm_scan_request(struct iwl_mvm *mvm,
302 struct ieee80211_vif *vif,
303 struct cfg80211_scan_request *req)
305 struct iwl_host_cmd hcmd = {
306 .id = SCAN_REQUEST_CMD,
308 .data = { mvm->scan_cmd, },
309 .dataflags = { IWL_HCMD_DFL_NOCOPY, },
311 struct iwl_scan_cmd *cmd = mvm->scan_cmd;
316 bool basic_ssid = !(mvm->fw->ucode_capa.flags &
317 IWL_UCODE_TLV_FLAGS_NO_BASIC_SSID);
318 struct iwl_mvm_scan_params params = {};
320 lockdep_assert_held(&mvm->mutex);
322 /* we should have failed registration if scan_cmd was NULL */
323 if (WARN_ON(mvm->scan_cmd == NULL))
326 IWL_DEBUG_SCAN(mvm, "Handling mac80211 scan request\n");
327 mvm->scan_status = IWL_MVM_SCAN_OS;
328 memset(cmd, 0, sizeof(struct iwl_scan_cmd) +
329 mvm->fw->ucode_capa.max_probe_length +
330 (MAX_NUM_SCAN_CHANNELS * sizeof(struct iwl_scan_channel)));
332 cmd->channel_count = (u8)req->n_channels;
333 cmd->quiet_time = cpu_to_le16(IWL_ACTIVE_QUIET_TIME);
334 cmd->quiet_plcp_th = cpu_to_le16(IWL_PLCP_QUIET_THRESH);
335 cmd->rxchain_sel_flags = iwl_mvm_scan_rx_chain(mvm);
337 iwl_mvm_scan_calc_params(mvm, vif, req->n_ssids, ¶ms);
338 cmd->max_out_time = cpu_to_le32(params.max_out_time);
339 cmd->suspend_time = cpu_to_le32(params.suspend_time);
340 if (params.passive_fragmented)
341 cmd->scan_flags |= SCAN_FLAGS_FRAGMENTED_SCAN;
343 cmd->rxon_flags = iwl_mvm_scan_rxon_flags(req);
344 cmd->filter_flags = cpu_to_le32(MAC_FILTER_ACCEPT_GRP |
345 MAC_FILTER_IN_BEACON);
347 if (vif->type == NL80211_IFTYPE_P2P_DEVICE)
348 cmd->type = cpu_to_le32(SCAN_TYPE_DISCOVERY_FORCED);
350 cmd->type = cpu_to_le32(SCAN_TYPE_FORCED);
352 cmd->repeats = cpu_to_le32(1);
355 * If the user asked for passive scan, don't change to active scan if
356 * you see any activity on the channel - remain passive.
358 if (req->n_ssids > 0) {
359 cmd->passive2active = cpu_to_le16(1);
360 cmd->scan_flags |= SCAN_FLAGS_PASSIVE2ACTIVE;
362 ssid = req->ssids[0].ssid;
363 ssid_len = req->ssids[0].ssid_len;
366 cmd->passive2active = 0;
367 cmd->scan_flags &= ~SCAN_FLAGS_PASSIVE2ACTIVE;
370 iwl_mvm_scan_fill_ssids(cmd, req, basic_ssid ? 1 : 0);
372 cmd->tx_cmd.tx_flags = cpu_to_le32(TX_CMD_FLG_SEQ_CTL |
374 cmd->tx_cmd.sta_id = mvm->aux_sta.sta_id;
375 cmd->tx_cmd.life_time = cpu_to_le32(TX_CMD_LIFE_TIME_INFINITE);
376 cmd->tx_cmd.rate_n_flags =
377 iwl_mvm_scan_rate_n_flags(mvm, req->channels[0]->band,
381 cpu_to_le16(iwl_mvm_fill_probe_req(
382 (struct ieee80211_mgmt *)cmd->data,
384 req->n_ssids, ssid, ssid_len,
385 req->ie, req->ie_len,
386 mvm->fw->ucode_capa.max_probe_length));
388 iwl_mvm_scan_fill_channels(cmd, req, basic_ssid, ¶ms);
390 cmd->len = cpu_to_le16(sizeof(struct iwl_scan_cmd) +
391 le16_to_cpu(cmd->tx_cmd.len) +
392 (cmd->channel_count * sizeof(struct iwl_scan_channel)));
393 hcmd.len[0] = le16_to_cpu(cmd->len);
395 status = SCAN_RESPONSE_OK;
396 ret = iwl_mvm_send_cmd_status(mvm, &hcmd, &status);
397 if (!ret && status == SCAN_RESPONSE_OK) {
398 IWL_DEBUG_SCAN(mvm, "Scan request was sent successfully\n");
401 * If the scan failed, it usually means that the FW was unable
402 * to allocate the time events. Warn on it, but maybe we
403 * should try to send the command again with different params.
405 IWL_ERR(mvm, "Scan failed! status 0x%x ret %d\n",
407 mvm->scan_status = IWL_MVM_SCAN_NONE;
413 int iwl_mvm_rx_scan_response(struct iwl_mvm *mvm, struct iwl_rx_cmd_buffer *rxb,
414 struct iwl_device_cmd *cmd)
416 struct iwl_rx_packet *pkt = rxb_addr(rxb);
417 struct iwl_cmd_response *resp = (void *)pkt->data;
419 IWL_DEBUG_SCAN(mvm, "Scan response received. status 0x%x\n",
420 le32_to_cpu(resp->status));
424 int iwl_mvm_rx_scan_complete(struct iwl_mvm *mvm, struct iwl_rx_cmd_buffer *rxb,
425 struct iwl_device_cmd *cmd)
427 struct iwl_rx_packet *pkt = rxb_addr(rxb);
428 struct iwl_scan_complete_notif *notif = (void *)pkt->data;
430 lockdep_assert_held(&mvm->mutex);
432 IWL_DEBUG_SCAN(mvm, "Scan complete: status=0x%x scanned channels=%d\n",
433 notif->status, notif->scanned_channels);
435 if (mvm->scan_status == IWL_MVM_SCAN_OS)
436 mvm->scan_status = IWL_MVM_SCAN_NONE;
437 ieee80211_scan_completed(mvm->hw, notif->status != SCAN_COMP_STATUS_OK);
439 iwl_mvm_unref(mvm, IWL_MVM_REF_SCAN);
444 int iwl_mvm_rx_sched_scan_results(struct iwl_mvm *mvm,
445 struct iwl_rx_cmd_buffer *rxb,
446 struct iwl_device_cmd *cmd)
448 struct iwl_rx_packet *pkt = rxb_addr(rxb);
449 struct iwl_sched_scan_results *notif = (void *)pkt->data;
451 if (notif->client_bitmap & SCAN_CLIENT_SCHED_SCAN) {
452 IWL_DEBUG_SCAN(mvm, "Scheduled scan results\n");
453 ieee80211_sched_scan_results(mvm->hw);
459 static bool iwl_mvm_scan_abort_notif(struct iwl_notif_wait_data *notif_wait,
460 struct iwl_rx_packet *pkt, void *data)
462 struct iwl_mvm *mvm =
463 container_of(notif_wait, struct iwl_mvm, notif_wait);
464 struct iwl_scan_complete_notif *notif;
467 switch (pkt->hdr.cmd) {
469 resp = (void *)pkt->data;
470 if (*resp == CAN_ABORT_STATUS) {
472 "Scan can be aborted, wait until completion\n");
477 * If scan cannot be aborted, it means that we had a
478 * SCAN_COMPLETE_NOTIFICATION in the pipe and it called
479 * ieee80211_scan_completed already.
481 IWL_DEBUG_SCAN(mvm, "Scan cannot be aborted, exit now: %d\n",
485 case SCAN_COMPLETE_NOTIFICATION:
486 notif = (void *)pkt->data;
487 IWL_DEBUG_SCAN(mvm, "Scan aborted: status 0x%x\n",
497 int iwl_mvm_cancel_scan(struct iwl_mvm *mvm)
499 struct iwl_notification_wait wait_scan_abort;
500 static const u8 scan_abort_notif[] = { SCAN_ABORT_CMD,
501 SCAN_COMPLETE_NOTIFICATION };
504 if (mvm->scan_status == IWL_MVM_SCAN_NONE)
507 if (iwl_mvm_is_radio_killed(mvm)) {
508 ieee80211_scan_completed(mvm->hw, true);
509 iwl_mvm_unref(mvm, IWL_MVM_REF_SCAN);
510 mvm->scan_status = IWL_MVM_SCAN_NONE;
514 iwl_init_notification_wait(&mvm->notif_wait, &wait_scan_abort,
516 ARRAY_SIZE(scan_abort_notif),
517 iwl_mvm_scan_abort_notif, NULL);
519 ret = iwl_mvm_send_cmd_pdu(mvm, SCAN_ABORT_CMD, 0, 0, NULL);
521 IWL_ERR(mvm, "Couldn't send SCAN_ABORT_CMD: %d\n", ret);
522 /* mac80211's state will be cleaned in the nic_restart flow */
523 goto out_remove_notif;
526 return iwl_wait_notification(&mvm->notif_wait, &wait_scan_abort, HZ);
529 iwl_remove_notification(&mvm->notif_wait, &wait_scan_abort);
533 int iwl_mvm_rx_scan_offload_complete_notif(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 struct iwl_scan_offload_complete *scan_notif = (void *)pkt->data;
540 /* scan status must be locked for proper checking */
541 lockdep_assert_held(&mvm->mutex);
544 "Scheduled scan completed, status %s EBS status %s:%d\n",
545 scan_notif->status == IWL_SCAN_OFFLOAD_COMPLETED ?
546 "completed" : "aborted", scan_notif->ebs_status ==
547 IWL_SCAN_EBS_SUCCESS ? "success" : "failed",
548 scan_notif->ebs_status);
551 /* only call mac80211 completion if the stop was initiated by FW */
552 if (mvm->scan_status == IWL_MVM_SCAN_SCHED) {
553 mvm->scan_status = IWL_MVM_SCAN_NONE;
554 ieee80211_sched_scan_stopped(mvm->hw);
557 mvm->last_ebs_successful = !scan_notif->ebs_status;
562 static void iwl_scan_offload_build_tx_cmd(struct iwl_mvm *mvm,
563 struct ieee80211_vif *vif,
564 struct ieee80211_sched_scan_ies *ies,
565 enum ieee80211_band band,
566 struct iwl_tx_cmd *cmd,
571 cmd->tx_flags = cpu_to_le32(TX_CMD_FLG_SEQ_CTL);
572 cmd->life_time = cpu_to_le32(TX_CMD_LIFE_TIME_INFINITE);
573 cmd->sta_id = mvm->aux_sta.sta_id;
575 cmd->rate_n_flags = iwl_mvm_scan_rate_n_flags(mvm, band, false);
577 cmd_len = iwl_mvm_fill_probe_req((struct ieee80211_mgmt *)data,
580 ies->ie[band], ies->len[band],
581 SCAN_OFFLOAD_PROBE_REQ_SIZE);
582 cmd->len = cpu_to_le16(cmd_len);
585 static void iwl_build_scan_cmd(struct iwl_mvm *mvm,
586 struct ieee80211_vif *vif,
587 struct cfg80211_sched_scan_request *req,
588 struct iwl_scan_offload_cmd *scan,
589 struct iwl_mvm_scan_params *params)
591 scan->channel_count =
592 mvm->nvm_data->bands[IEEE80211_BAND_2GHZ].n_channels +
593 mvm->nvm_data->bands[IEEE80211_BAND_5GHZ].n_channels;
594 scan->quiet_time = cpu_to_le16(IWL_ACTIVE_QUIET_TIME);
595 scan->quiet_plcp_th = cpu_to_le16(IWL_PLCP_QUIET_THRESH);
596 scan->good_CRC_th = IWL_GOOD_CRC_TH_DEFAULT;
597 scan->rx_chain = iwl_mvm_scan_rx_chain(mvm);
599 scan->max_out_time = cpu_to_le32(params->max_out_time);
600 scan->suspend_time = cpu_to_le32(params->suspend_time);
602 scan->filter_flags |= cpu_to_le32(MAC_FILTER_ACCEPT_GRP |
603 MAC_FILTER_IN_BEACON);
604 scan->scan_type = cpu_to_le32(SCAN_TYPE_BACKGROUND);
605 scan->rep_count = cpu_to_le32(1);
607 if (params->passive_fragmented)
608 scan->scan_flags |= SCAN_FLAGS_FRAGMENTED_SCAN;
611 static int iwl_ssid_exist(u8 *ssid, u8 ssid_len, struct iwl_ssid_ie *ssid_list)
615 for (i = 0; i < PROBE_OPTION_MAX; i++) {
616 if (!ssid_list[i].len)
618 if (ssid_list[i].len == ssid_len &&
619 !memcmp(ssid_list->ssid, ssid, ssid_len))
625 static void iwl_scan_offload_build_ssid(struct cfg80211_sched_scan_request *req,
626 struct iwl_scan_offload_cmd *scan,
633 * copy SSIDs from match list.
634 * iwl_config_sched_scan_profiles() uses the order of these ssids to
637 for (i = 0; i < req->n_match_sets && i < PROBE_OPTION_MAX; i++) {
638 /* skip empty SSID matchsets */
639 if (!req->match_sets[i].ssid.ssid_len)
641 scan->direct_scan[i].id = WLAN_EID_SSID;
642 scan->direct_scan[i].len = req->match_sets[i].ssid.ssid_len;
643 memcpy(scan->direct_scan[i].ssid, req->match_sets[i].ssid.ssid,
644 scan->direct_scan[i].len);
647 /* add SSIDs from scan SSID list */
649 for (j = 0; j < req->n_ssids && i < PROBE_OPTION_MAX; j++) {
650 index = iwl_ssid_exist(req->ssids[j].ssid,
651 req->ssids[j].ssid_len,
654 if (!req->ssids[j].ssid_len)
656 scan->direct_scan[i].id = WLAN_EID_SSID;
657 scan->direct_scan[i].len = req->ssids[j].ssid_len;
658 memcpy(scan->direct_scan[i].ssid, req->ssids[j].ssid,
659 scan->direct_scan[i].len);
660 *ssid_bitmap |= BIT(i + 1);
663 *ssid_bitmap |= BIT(index + 1);
668 static void iwl_build_channel_cfg(struct iwl_mvm *mvm,
669 struct cfg80211_sched_scan_request *req,
670 struct iwl_scan_channel_cfg *channels,
671 enum ieee80211_band band,
672 int *head, int *tail,
674 struct iwl_mvm_scan_params *params)
676 struct ieee80211_supported_band *s_band;
677 int n_channels = req->n_channels;
682 * We have to configure all supported channels, even if we don't want to
683 * scan on them, but we have to send channels in the order that we want
684 * to scan. So add requested channels to head of the list and others to
687 s_band = &mvm->nvm_data->bands[band];
689 for (i = 0; i < s_band->n_channels && *head <= *tail; i++) {
691 for (j = 0; j < n_channels; j++)
692 if (s_band->channels[i].center_freq ==
693 req->channels[j]->center_freq) {
697 * Channels that came with the request will be
707 channels->channel_number[index] =
708 cpu_to_le16(ieee80211_frequency_to_channel(
709 s_band->channels[i].center_freq));
710 channels->dwell_time[index][0] = params->dwell[band].active;
711 channels->dwell_time[index][1] = params->dwell[band].passive;
713 channels->iter_count[index] = cpu_to_le16(1);
714 channels->iter_interval[index] = 0;
716 if (!(s_band->channels[i].flags & IEEE80211_CHAN_NO_IR))
717 channels->type[index] |=
718 cpu_to_le32(IWL_SCAN_OFFLOAD_CHANNEL_ACTIVE);
720 channels->type[index] |=
721 cpu_to_le32(IWL_SCAN_OFFLOAD_CHANNEL_FULL);
723 channels->type[index] |=
724 cpu_to_le32(IWL_SCAN_OFFLOAD_CHANNEL_PARTIAL);
726 if (s_band->channels[i].flags & IEEE80211_CHAN_NO_HT40)
727 channels->type[index] |=
728 cpu_to_le32(IWL_SCAN_OFFLOAD_CHANNEL_NARROW);
730 /* scan for all SSIDs from req->ssids */
731 channels->type[index] |= cpu_to_le32(ssid_bitmap);
735 int iwl_mvm_config_sched_scan(struct iwl_mvm *mvm,
736 struct ieee80211_vif *vif,
737 struct cfg80211_sched_scan_request *req,
738 struct ieee80211_sched_scan_ies *ies)
740 int band_2ghz = mvm->nvm_data->bands[IEEE80211_BAND_2GHZ].n_channels;
741 int band_5ghz = mvm->nvm_data->bands[IEEE80211_BAND_5GHZ].n_channels;
743 int tail = band_2ghz + band_5ghz - 1;
748 struct iwl_scan_offload_cfg *scan_cfg;
749 struct iwl_host_cmd cmd = {
750 .id = SCAN_OFFLOAD_CONFIG_CMD,
752 struct iwl_mvm_scan_params params = {};
754 lockdep_assert_held(&mvm->mutex);
756 cmd_len = sizeof(struct iwl_scan_offload_cfg) +
757 2 * SCAN_OFFLOAD_PROBE_REQ_SIZE;
759 scan_cfg = kzalloc(cmd_len, GFP_KERNEL);
763 iwl_mvm_scan_calc_params(mvm, vif, req->n_ssids, ¶ms);
764 iwl_build_scan_cmd(mvm, vif, req, &scan_cfg->scan_cmd, ¶ms);
765 scan_cfg->scan_cmd.len = cpu_to_le16(cmd_len);
767 iwl_scan_offload_build_ssid(req, &scan_cfg->scan_cmd, &ssid_bitmap);
768 /* build tx frames for supported bands */
770 iwl_scan_offload_build_tx_cmd(mvm, vif, ies,
772 &scan_cfg->scan_cmd.tx_cmd[0],
774 iwl_build_channel_cfg(mvm, req, &scan_cfg->channel_cfg,
775 IEEE80211_BAND_2GHZ, &head, &tail,
776 ssid_bitmap, ¶ms);
779 iwl_scan_offload_build_tx_cmd(mvm, vif, ies,
781 &scan_cfg->scan_cmd.tx_cmd[1],
783 SCAN_OFFLOAD_PROBE_REQ_SIZE);
784 iwl_build_channel_cfg(mvm, req, &scan_cfg->channel_cfg,
785 IEEE80211_BAND_5GHZ, &head, &tail,
786 ssid_bitmap, ¶ms);
789 cmd.data[0] = scan_cfg;
790 cmd.len[0] = cmd_len;
791 cmd.dataflags[0] = IWL_HCMD_DFL_NOCOPY;
793 IWL_DEBUG_SCAN(mvm, "Sending scheduled scan config\n");
795 ret = iwl_mvm_send_cmd(mvm, &cmd);
800 int iwl_mvm_config_sched_scan_profiles(struct iwl_mvm *mvm,
801 struct cfg80211_sched_scan_request *req)
803 struct iwl_scan_offload_profile *profile;
804 struct iwl_scan_offload_profile_cfg *profile_cfg;
805 struct iwl_scan_offload_blacklist *blacklist;
806 struct iwl_host_cmd cmd = {
807 .id = SCAN_OFFLOAD_UPDATE_PROFILES_CMD,
808 .len[1] = sizeof(*profile_cfg),
809 .dataflags[0] = IWL_HCMD_DFL_NOCOPY,
810 .dataflags[1] = IWL_HCMD_DFL_NOCOPY,
816 if (WARN_ON(req->n_match_sets > IWL_SCAN_MAX_PROFILES))
819 if (mvm->fw->ucode_capa.flags & IWL_UCODE_TLV_FLAGS_SHORT_BL)
820 blacklist_len = IWL_SCAN_SHORT_BLACKLIST_LEN;
822 blacklist_len = IWL_SCAN_MAX_BLACKLIST_LEN;
824 blacklist = kzalloc(sizeof(*blacklist) * blacklist_len, GFP_KERNEL);
828 profile_cfg = kzalloc(sizeof(*profile_cfg), GFP_KERNEL);
834 cmd.data[0] = blacklist;
835 cmd.len[0] = sizeof(*blacklist) * blacklist_len;
836 cmd.data[1] = profile_cfg;
838 /* No blacklist configuration */
840 profile_cfg->num_profiles = req->n_match_sets;
841 profile_cfg->active_clients = SCAN_CLIENT_SCHED_SCAN;
842 profile_cfg->pass_match = SCAN_CLIENT_SCHED_SCAN;
843 profile_cfg->match_notify = SCAN_CLIENT_SCHED_SCAN;
844 if (!req->n_match_sets || !req->match_sets[0].ssid.ssid_len)
845 profile_cfg->any_beacon_notify = SCAN_CLIENT_SCHED_SCAN;
847 for (i = 0; i < req->n_match_sets; i++) {
848 profile = &profile_cfg->profiles[i];
849 profile->ssid_index = i;
850 /* Support any cipher and auth algorithm */
851 profile->unicast_cipher = 0xff;
852 profile->auth_alg = 0xff;
853 profile->network_type = IWL_NETWORK_TYPE_ANY;
854 profile->band_selection = IWL_SCAN_OFFLOAD_SELECT_ANY;
855 profile->client_bitmap = SCAN_CLIENT_SCHED_SCAN;
858 IWL_DEBUG_SCAN(mvm, "Sending scheduled scan profile config\n");
860 ret = iwl_mvm_send_cmd(mvm, &cmd);
868 int iwl_mvm_sched_scan_start(struct iwl_mvm *mvm,
869 struct cfg80211_sched_scan_request *req)
871 struct iwl_scan_offload_req scan_req = {
872 .watchdog = IWL_SCHED_SCAN_WATCHDOG,
874 .schedule_line[0].iterations = IWL_FAST_SCHED_SCAN_ITERATIONS,
875 .schedule_line[0].delay = req->interval / 1000,
876 .schedule_line[0].full_scan_mul = 1,
878 .schedule_line[1].iterations = 0xff,
879 .schedule_line[1].delay = req->interval / 1000,
880 .schedule_line[1].full_scan_mul = IWL_FULL_SCAN_MULTIPLIER,
883 if (req->n_match_sets && req->match_sets[0].ssid.ssid_len) {
885 "Sending scheduled scan with filtering, filter len %d\n",
889 "Sending Scheduled scan without filtering\n");
890 scan_req.flags |= cpu_to_le16(IWL_SCAN_OFFLOAD_FLAG_PASS_ALL);
893 if (mvm->last_ebs_successful &&
894 mvm->fw->ucode_capa.flags & IWL_UCODE_TLV_FLAGS_EBS_SUPPORT)
896 cpu_to_le16(IWL_SCAN_OFFLOAD_FLAG_EBS_ACCURATE_MODE);
898 return iwl_mvm_send_cmd_pdu(mvm, SCAN_OFFLOAD_REQUEST_CMD, 0,
899 sizeof(scan_req), &scan_req);
902 static int iwl_mvm_send_sched_scan_abort(struct iwl_mvm *mvm)
905 struct iwl_host_cmd cmd = {
906 .id = SCAN_OFFLOAD_ABORT_CMD,
910 /* Exit instantly with error when device is not ready
911 * to receive scan abort command or it does not perform
912 * scheduled scan currently */
913 if (mvm->scan_status != IWL_MVM_SCAN_SCHED)
916 ret = iwl_mvm_send_cmd_status(mvm, &cmd, &status);
920 if (status != CAN_ABORT_STATUS) {
922 * The scan abort will return 1 for success or
923 * 2 for "failure". A failure condition can be
924 * due to simply not being in an active scan which
925 * can occur if we send the scan abort before the
926 * microcode has notified us that a scan is completed.
928 IWL_DEBUG_SCAN(mvm, "SCAN OFFLOAD ABORT ret %d.\n", status);
935 int iwl_mvm_sched_scan_stop(struct iwl_mvm *mvm, bool notify)
938 struct iwl_notification_wait wait_scan_done;
939 static const u8 scan_done_notif[] = { SCAN_OFFLOAD_COMPLETE, };
941 lockdep_assert_held(&mvm->mutex);
943 if (mvm->scan_status != IWL_MVM_SCAN_SCHED) {
944 IWL_DEBUG_SCAN(mvm, "No offloaded scan to stop\n");
948 iwl_init_notification_wait(&mvm->notif_wait, &wait_scan_done,
950 ARRAY_SIZE(scan_done_notif),
953 ret = iwl_mvm_send_sched_scan_abort(mvm);
955 IWL_DEBUG_SCAN(mvm, "Send stop offload scan failed %d\n", ret);
956 iwl_remove_notification(&mvm->notif_wait, &wait_scan_done);
960 IWL_DEBUG_SCAN(mvm, "Successfully sent stop offload scan\n");
962 ret = iwl_wait_notification(&mvm->notif_wait, &wait_scan_done, 1 * HZ);
967 * Clear the scan status so the next scan requests will succeed. This
968 * also ensures the Rx handler doesn't do anything, as the scan was
969 * stopped from above.
971 mvm->scan_status = IWL_MVM_SCAN_NONE;
974 ieee80211_sched_scan_stopped(mvm->hw);