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 - 2013 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 - 2013 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.
42 * * Redistributions in binary form must reproduce the above copyright
43 * notice, this list of conditions and the following disclaimer in
44 * the documentation and/or other materials provided with the
46 * * Neither the name Intel Corporation nor the names of its
47 * contributors may be used to endorse or promote products derived
48 * from this software without specific prior written permission.
50 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
51 * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
52 * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
53 * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
54 * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
55 * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
56 * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
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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 static inline __le16 iwl_mvm_scan_rx_chain(struct iwl_mvm *mvm)
79 if (mvm->scan_rx_ant != ANT_NONE)
80 rx_ant = mvm->scan_rx_ant;
82 rx_ant = iwl_fw_valid_rx_ant(mvm->fw);
83 rx_chain = rx_ant << PHY_RX_CHAIN_VALID_POS;
84 rx_chain |= rx_ant << PHY_RX_CHAIN_FORCE_MIMO_SEL_POS;
85 rx_chain |= rx_ant << PHY_RX_CHAIN_FORCE_SEL_POS;
86 rx_chain |= 0x1 << PHY_RX_CHAIN_DRIVER_FORCE_POS;
87 return cpu_to_le16(rx_chain);
90 static inline __le32 iwl_mvm_scan_max_out_time(struct ieee80211_vif *vif)
92 if (vif->bss_conf.assoc)
93 return cpu_to_le32(200 * 1024);
98 static inline __le32 iwl_mvm_scan_suspend_time(struct ieee80211_vif *vif)
100 if (vif->bss_conf.assoc)
101 return cpu_to_le32(vif->bss_conf.beacon_int);
107 iwl_mvm_scan_rxon_flags(struct cfg80211_scan_request *req)
109 if (req->channels[0]->band == IEEE80211_BAND_2GHZ)
110 return cpu_to_le32(PHY_BAND_24);
112 return cpu_to_le32(PHY_BAND_5);
116 iwl_mvm_scan_rate_n_flags(struct iwl_mvm *mvm, enum ieee80211_band band,
121 mvm->scan_last_antenna_idx =
122 iwl_mvm_next_antenna(mvm, iwl_fw_valid_tx_ant(mvm->fw),
123 mvm->scan_last_antenna_idx);
124 tx_ant = BIT(mvm->scan_last_antenna_idx) << RATE_MCS_ANT_POS;
126 if (band == IEEE80211_BAND_2GHZ && !no_cck)
127 return cpu_to_le32(IWL_RATE_1M_PLCP | RATE_MCS_CCK_MSK |
130 return cpu_to_le32(IWL_RATE_6M_PLCP | tx_ant);
134 * We insert the SSIDs in an inverted order, because the FW will
135 * invert it back. The most prioritized SSID, which is first in the
136 * request list, is not copied here, but inserted directly to the probe
139 static void iwl_mvm_scan_fill_ssids(struct iwl_scan_cmd *cmd,
140 struct cfg80211_scan_request *req,
145 for (req_idx = req->n_ssids - 1, fw_idx = 0; req_idx >= first;
146 req_idx--, fw_idx++) {
147 cmd->direct_scan[fw_idx].id = WLAN_EID_SSID;
148 cmd->direct_scan[fw_idx].len = req->ssids[req_idx].ssid_len;
149 memcpy(cmd->direct_scan[fw_idx].ssid,
150 req->ssids[req_idx].ssid,
151 req->ssids[req_idx].ssid_len);
156 * If req->n_ssids > 0, it means we should do an active scan.
157 * In case of active scan w/o directed scan, we receive a zero-length SSID
158 * just to notify that this scan is active and not passive.
159 * In order to notify the FW of the number of SSIDs we wish to scan (including
160 * the zero-length one), we need to set the corresponding bits in chan->type,
161 * one for each SSID, and set the active bit (first). If the first SSID is
162 * already included in the probe template, so we need to set only
163 * req->n_ssids - 1 bits in addition to the first bit.
165 static u16 iwl_mvm_get_active_dwell(enum ieee80211_band band, int n_ssids)
167 if (band == IEEE80211_BAND_2GHZ)
168 return 30 + 3 * (n_ssids + 1);
169 return 20 + 2 * (n_ssids + 1);
172 static u16 iwl_mvm_get_passive_dwell(enum ieee80211_band band)
174 return band == IEEE80211_BAND_2GHZ ? 100 + 20 : 100 + 10;
177 static void iwl_mvm_scan_fill_channels(struct iwl_scan_cmd *cmd,
178 struct cfg80211_scan_request *req,
181 u16 passive_dwell = iwl_mvm_get_passive_dwell(req->channels[0]->band);
182 u16 active_dwell = iwl_mvm_get_active_dwell(req->channels[0]->band,
184 struct iwl_scan_channel *chan = (struct iwl_scan_channel *)
185 (cmd->data + le16_to_cpu(cmd->tx_cmd.len));
187 int type = BIT(req->n_ssids) - 1;
190 type |= BIT(req->n_ssids);
192 for (i = 0; i < cmd->channel_count; i++) {
193 chan->channel = cpu_to_le16(req->channels[i]->hw_value);
194 chan->type = cpu_to_le32(type);
195 if (req->channels[i]->flags & IEEE80211_CHAN_PASSIVE_SCAN)
196 chan->type &= cpu_to_le32(~SCAN_CHANNEL_TYPE_ACTIVE);
197 chan->active_dwell = cpu_to_le16(active_dwell);
198 chan->passive_dwell = cpu_to_le16(passive_dwell);
199 chan->iteration_count = cpu_to_le16(1);
205 * Fill in probe request with the following parameters:
206 * TA is our vif HW address, which mac80211 ensures we have.
207 * Packet is broadcasted, so this is both SA and DA.
208 * The probe request IE is made out of two: first comes the most prioritized
209 * SSID if a directed scan is requested. Second comes whatever extra
210 * information was given to us as the scan request IE.
212 static u16 iwl_mvm_fill_probe_req(struct ieee80211_mgmt *frame, const u8 *ta,
213 int n_ssids, const u8 *ssid, int ssid_len,
214 const u8 *ie, int ie_len,
220 /* Make sure there is enough space for the probe request,
221 * two mandatory IEs and the data */
226 frame->frame_control = cpu_to_le16(IEEE80211_STYPE_PROBE_REQ);
227 eth_broadcast_addr(frame->da);
228 memcpy(frame->sa, ta, ETH_ALEN);
229 eth_broadcast_addr(frame->bssid);
234 /* for passive scans, no need to fill anything */
238 /* points to the payload of the request */
239 pos = &frame->u.probe_req.variable[0];
241 /* fill in our SSID IE */
242 left -= ssid_len + 2;
245 *pos++ = WLAN_EID_SSID;
247 if (ssid && ssid_len) { /* ssid_len may be == 0 even if ssid is valid */
248 memcpy(pos, ssid, ssid_len);
254 if (WARN_ON(left < ie_len))
258 memcpy(pos, ie, ie_len);
265 int iwl_mvm_scan_request(struct iwl_mvm *mvm,
266 struct ieee80211_vif *vif,
267 struct cfg80211_scan_request *req)
269 struct iwl_host_cmd hcmd = {
270 .id = SCAN_REQUEST_CMD,
272 .data = { mvm->scan_cmd, },
274 .dataflags = { IWL_HCMD_DFL_NOCOPY, },
276 struct iwl_scan_cmd *cmd = mvm->scan_cmd;
281 bool basic_ssid = !(mvm->fw->ucode_capa.flags &
282 IWL_UCODE_TLV_FLAGS_NO_BASIC_SSID);
284 lockdep_assert_held(&mvm->mutex);
285 BUG_ON(mvm->scan_cmd == NULL);
287 IWL_DEBUG_SCAN(mvm, "Handling mac80211 scan request\n");
288 mvm->scan_status = IWL_MVM_SCAN_OS;
289 memset(cmd, 0, sizeof(struct iwl_scan_cmd) +
290 mvm->fw->ucode_capa.max_probe_length +
291 (MAX_NUM_SCAN_CHANNELS * sizeof(struct iwl_scan_channel)));
293 cmd->channel_count = (u8)req->n_channels;
294 cmd->quiet_time = cpu_to_le16(IWL_ACTIVE_QUIET_TIME);
295 cmd->quiet_plcp_th = cpu_to_le16(IWL_PLCP_QUIET_THRESH);
296 cmd->rxchain_sel_flags = iwl_mvm_scan_rx_chain(mvm);
297 cmd->max_out_time = iwl_mvm_scan_max_out_time(vif);
298 cmd->suspend_time = iwl_mvm_scan_suspend_time(vif);
299 cmd->rxon_flags = iwl_mvm_scan_rxon_flags(req);
300 cmd->filter_flags = cpu_to_le32(MAC_FILTER_ACCEPT_GRP |
301 MAC_FILTER_IN_BEACON);
303 if (vif->type == NL80211_IFTYPE_P2P_DEVICE)
304 cmd->type = cpu_to_le32(SCAN_TYPE_DISCOVERY_FORCED);
306 cmd->type = cpu_to_le32(SCAN_TYPE_FORCED);
308 cmd->repeats = cpu_to_le32(1);
311 * If the user asked for passive scan, don't change to active scan if
312 * you see any activity on the channel - remain passive.
314 if (req->n_ssids > 0) {
315 cmd->passive2active = cpu_to_le16(1);
316 cmd->scan_flags |= SCAN_FLAGS_PASSIVE2ACTIVE;
318 ssid = req->ssids[0].ssid;
319 ssid_len = req->ssids[0].ssid_len;
322 cmd->passive2active = 0;
323 cmd->scan_flags &= ~SCAN_FLAGS_PASSIVE2ACTIVE;
326 iwl_mvm_scan_fill_ssids(cmd, req, basic_ssid ? 1 : 0);
328 cmd->tx_cmd.tx_flags = cpu_to_le32(TX_CMD_FLG_SEQ_CTL);
329 cmd->tx_cmd.sta_id = mvm->aux_sta.sta_id;
330 cmd->tx_cmd.life_time = cpu_to_le32(TX_CMD_LIFE_TIME_INFINITE);
331 cmd->tx_cmd.rate_n_flags =
332 iwl_mvm_scan_rate_n_flags(mvm, req->channels[0]->band,
336 cpu_to_le16(iwl_mvm_fill_probe_req(
337 (struct ieee80211_mgmt *)cmd->data,
339 req->n_ssids, ssid, ssid_len,
340 req->ie, req->ie_len,
341 mvm->fw->ucode_capa.max_probe_length));
343 iwl_mvm_scan_fill_channels(cmd, req, basic_ssid);
345 cmd->len = cpu_to_le16(sizeof(struct iwl_scan_cmd) +
346 le16_to_cpu(cmd->tx_cmd.len) +
347 (cmd->channel_count * sizeof(struct iwl_scan_channel)));
348 hcmd.len[0] = le16_to_cpu(cmd->len);
350 status = SCAN_RESPONSE_OK;
351 ret = iwl_mvm_send_cmd_status(mvm, &hcmd, &status);
352 if (!ret && status == SCAN_RESPONSE_OK) {
353 IWL_DEBUG_SCAN(mvm, "Scan request was sent successfully\n");
356 * If the scan failed, it usually means that the FW was unable
357 * to allocate the time events. Warn on it, but maybe we
358 * should try to send the command again with different params.
360 IWL_ERR(mvm, "Scan failed! status 0x%x ret %d\n",
362 mvm->scan_status = IWL_MVM_SCAN_NONE;
368 int iwl_mvm_rx_scan_response(struct iwl_mvm *mvm, struct iwl_rx_cmd_buffer *rxb,
369 struct iwl_device_cmd *cmd)
371 struct iwl_rx_packet *pkt = rxb_addr(rxb);
372 struct iwl_cmd_response *resp = (void *)pkt->data;
374 IWL_DEBUG_SCAN(mvm, "Scan response received. status 0x%x\n",
375 le32_to_cpu(resp->status));
379 int iwl_mvm_rx_scan_complete(struct iwl_mvm *mvm, struct iwl_rx_cmd_buffer *rxb,
380 struct iwl_device_cmd *cmd)
382 struct iwl_rx_packet *pkt = rxb_addr(rxb);
383 struct iwl_scan_complete_notif *notif = (void *)pkt->data;
385 IWL_DEBUG_SCAN(mvm, "Scan complete: status=0x%x scanned channels=%d\n",
386 notif->status, notif->scanned_channels);
388 mvm->scan_status = IWL_MVM_SCAN_NONE;
389 ieee80211_scan_completed(mvm->hw, notif->status != SCAN_COMP_STATUS_OK);
394 int iwl_mvm_rx_sched_scan_results(struct iwl_mvm *mvm,
395 struct iwl_rx_cmd_buffer *rxb,
396 struct iwl_device_cmd *cmd)
398 struct iwl_rx_packet *pkt = rxb_addr(rxb);
399 struct iwl_sched_scan_results *notif = (void *)pkt->data;
401 if (notif->client_bitmap & SCAN_CLIENT_SCHED_SCAN) {
402 IWL_DEBUG_SCAN(mvm, "Scheduled scan results\n");
403 ieee80211_sched_scan_results(mvm->hw);
409 static bool iwl_mvm_scan_abort_notif(struct iwl_notif_wait_data *notif_wait,
410 struct iwl_rx_packet *pkt, void *data)
412 struct iwl_mvm *mvm =
413 container_of(notif_wait, struct iwl_mvm, notif_wait);
414 struct iwl_scan_complete_notif *notif;
417 switch (pkt->hdr.cmd) {
419 resp = (void *)pkt->data;
420 if (*resp == CAN_ABORT_STATUS) {
422 "Scan can be aborted, wait until completion\n");
426 IWL_DEBUG_SCAN(mvm, "Scan cannot be aborted, exit now: %d\n",
430 case SCAN_COMPLETE_NOTIFICATION:
431 notif = (void *)pkt->data;
432 IWL_DEBUG_SCAN(mvm, "Scan aborted: status 0x%x\n",
442 void iwl_mvm_cancel_scan(struct iwl_mvm *mvm)
444 struct iwl_notification_wait wait_scan_abort;
445 static const u8 scan_abort_notif[] = { SCAN_ABORT_CMD,
446 SCAN_COMPLETE_NOTIFICATION };
449 iwl_init_notification_wait(&mvm->notif_wait, &wait_scan_abort,
451 ARRAY_SIZE(scan_abort_notif),
452 iwl_mvm_scan_abort_notif, NULL);
454 ret = iwl_mvm_send_cmd_pdu(mvm, SCAN_ABORT_CMD, CMD_SYNC, 0, NULL);
456 IWL_ERR(mvm, "Couldn't send SCAN_ABORT_CMD: %d\n", ret);
457 goto out_remove_notif;
460 ret = iwl_wait_notification(&mvm->notif_wait, &wait_scan_abort, 1 * HZ);
462 IWL_ERR(mvm, "%s - failed on timeout\n", __func__);
467 iwl_remove_notification(&mvm->notif_wait, &wait_scan_abort);
470 int iwl_mvm_rx_scan_offload_complete_notif(struct iwl_mvm *mvm,
471 struct iwl_rx_cmd_buffer *rxb,
472 struct iwl_device_cmd *cmd)
474 struct iwl_rx_packet *pkt = rxb_addr(rxb);
475 struct iwl_scan_offload_complete *scan_notif = (void *)pkt->data;
477 IWL_DEBUG_SCAN(mvm, "Scheduled scan completed, status %s\n",
478 scan_notif->status == IWL_SCAN_OFFLOAD_COMPLETED ?
479 "completed" : "aborted");
481 mvm->scan_status = IWL_MVM_SCAN_NONE;
482 ieee80211_sched_scan_stopped(mvm->hw);
487 static void iwl_scan_offload_build_tx_cmd(struct iwl_mvm *mvm,
488 struct ieee80211_vif *vif,
489 struct ieee80211_sched_scan_ies *ies,
490 enum ieee80211_band band,
491 struct iwl_tx_cmd *cmd,
496 cmd->tx_flags = cpu_to_le32(TX_CMD_FLG_SEQ_CTL);
497 cmd->life_time = cpu_to_le32(TX_CMD_LIFE_TIME_INFINITE);
498 cmd->sta_id = mvm->aux_sta.sta_id;
500 cmd->rate_n_flags = iwl_mvm_scan_rate_n_flags(mvm, band, false);
502 cmd_len = iwl_mvm_fill_probe_req((struct ieee80211_mgmt *)data,
505 ies->ie[band], ies->len[band],
506 SCAN_OFFLOAD_PROBE_REQ_SIZE);
507 cmd->len = cpu_to_le16(cmd_len);
510 static void iwl_build_scan_cmd(struct iwl_mvm *mvm,
511 struct ieee80211_vif *vif,
512 struct cfg80211_sched_scan_request *req,
513 struct iwl_scan_offload_cmd *scan)
515 scan->channel_count =
516 mvm->nvm_data->bands[IEEE80211_BAND_2GHZ].n_channels +
517 mvm->nvm_data->bands[IEEE80211_BAND_5GHZ].n_channels;
518 scan->quiet_time = cpu_to_le16(IWL_ACTIVE_QUIET_TIME);
519 scan->quiet_plcp_th = cpu_to_le16(IWL_PLCP_QUIET_THRESH);
520 scan->good_CRC_th = IWL_GOOD_CRC_TH_DEFAULT;
521 scan->rx_chain = iwl_mvm_scan_rx_chain(mvm);
522 scan->max_out_time = cpu_to_le32(200 * 1024);
523 scan->suspend_time = iwl_mvm_scan_suspend_time(vif);
524 scan->filter_flags |= cpu_to_le32(MAC_FILTER_ACCEPT_GRP |
525 MAC_FILTER_IN_BEACON);
526 scan->scan_type = cpu_to_le32(SCAN_TYPE_BACKGROUND);
527 scan->rep_count = cpu_to_le32(1);
530 static int iwl_ssid_exist(u8 *ssid, u8 ssid_len, struct iwl_ssid_ie *ssid_list)
534 for (i = 0; i < PROBE_OPTION_MAX; i++) {
535 if (!ssid_list[i].len)
537 if (ssid_list[i].len == ssid_len &&
538 !memcmp(ssid_list->ssid, ssid, ssid_len))
544 static void iwl_scan_offload_build_ssid(struct cfg80211_sched_scan_request *req,
545 struct iwl_scan_offload_cmd *scan,
552 * copy SSIDs from match list.
553 * iwl_config_sched_scan_profiles() uses the order of these ssids to
556 for (i = 0; i < req->n_match_sets && i < PROBE_OPTION_MAX; i++) {
557 scan->direct_scan[i].id = WLAN_EID_SSID;
558 scan->direct_scan[i].len = req->match_sets[i].ssid.ssid_len;
559 memcpy(scan->direct_scan[i].ssid, req->match_sets[i].ssid.ssid,
560 scan->direct_scan[i].len);
563 /* add SSIDs from scan SSID list */
565 for (j = 0; j < req->n_ssids && i < PROBE_OPTION_MAX; j++) {
566 index = iwl_ssid_exist(req->ssids[j].ssid,
567 req->ssids[j].ssid_len,
570 if (!req->ssids[j].ssid_len)
572 scan->direct_scan[i].id = WLAN_EID_SSID;
573 scan->direct_scan[i].len = req->ssids[j].ssid_len;
574 memcpy(scan->direct_scan[i].ssid, req->ssids[j].ssid,
575 scan->direct_scan[i].len);
576 *ssid_bitmap |= BIT(i + 1);
579 *ssid_bitmap |= BIT(index + 1);
584 static void iwl_build_channel_cfg(struct iwl_mvm *mvm,
585 struct cfg80211_sched_scan_request *req,
586 struct iwl_scan_channel_cfg *channels,
587 enum ieee80211_band band,
588 int *head, int *tail,
591 struct ieee80211_supported_band *s_band;
592 int n_probes = req->n_ssids;
593 int n_channels = req->n_channels;
594 u8 active_dwell, passive_dwell;
599 * We have to configure all supported channels, even if we don't want to
600 * scan on them, but we have to send channels in the order that we want
601 * to scan. So add requested channels to head of the list and others to
604 active_dwell = iwl_mvm_get_active_dwell(band, n_probes);
605 passive_dwell = iwl_mvm_get_passive_dwell(band);
606 s_band = &mvm->nvm_data->bands[band];
608 for (i = 0; i < s_band->n_channels && *head <= *tail; i++) {
610 for (j = 0; j < n_channels; j++)
611 if (s_band->channels[i].center_freq ==
612 req->channels[j]->center_freq) {
616 * Channels that came with the request will be
626 channels->channel_number[index] =
627 cpu_to_le16(ieee80211_frequency_to_channel(
628 s_band->channels[i].center_freq));
629 channels->dwell_time[index][0] = active_dwell;
630 channels->dwell_time[index][1] = passive_dwell;
632 channels->iter_count[index] = cpu_to_le16(1);
633 channels->iter_interval[index] = 0;
635 if (!(s_band->channels[i].flags & IEEE80211_CHAN_PASSIVE_SCAN))
636 channels->type[index] |=
637 cpu_to_le32(IWL_SCAN_OFFLOAD_CHANNEL_ACTIVE);
639 channels->type[index] |=
640 cpu_to_le32(IWL_SCAN_OFFLOAD_CHANNEL_FULL);
642 channels->type[index] |=
643 cpu_to_le32(IWL_SCAN_OFFLOAD_CHANNEL_PARTIAL);
645 if (s_band->channels[i].flags & IEEE80211_CHAN_NO_HT40)
646 channels->type[index] |=
647 cpu_to_le32(IWL_SCAN_OFFLOAD_CHANNEL_NARROW);
649 /* scan for all SSIDs from req->ssids */
650 channels->type[index] |= cpu_to_le32(ssid_bitmap);
654 int iwl_mvm_config_sched_scan(struct iwl_mvm *mvm,
655 struct ieee80211_vif *vif,
656 struct cfg80211_sched_scan_request *req,
657 struct ieee80211_sched_scan_ies *ies)
659 int supported_bands = 0;
660 int band_2ghz = mvm->nvm_data->bands[IEEE80211_BAND_2GHZ].n_channels;
661 int band_5ghz = mvm->nvm_data->bands[IEEE80211_BAND_5GHZ].n_channels;
663 int tail = band_2ghz + band_5ghz;
668 struct iwl_scan_offload_cfg *scan_cfg;
669 struct iwl_host_cmd cmd = {
670 .id = SCAN_OFFLOAD_CONFIG_CMD,
674 lockdep_assert_held(&mvm->mutex);
681 cmd_len = sizeof(struct iwl_scan_offload_cfg) +
682 supported_bands * SCAN_OFFLOAD_PROBE_REQ_SIZE;
684 scan_cfg = kzalloc(cmd_len, GFP_KERNEL);
688 iwl_build_scan_cmd(mvm, vif, req, &scan_cfg->scan_cmd);
689 scan_cfg->scan_cmd.len = cpu_to_le16(cmd_len);
691 iwl_scan_offload_build_ssid(req, &scan_cfg->scan_cmd, &ssid_bitmap);
692 /* build tx frames for supported bands */
694 iwl_scan_offload_build_tx_cmd(mvm, vif, ies,
696 &scan_cfg->scan_cmd.tx_cmd[0],
698 iwl_build_channel_cfg(mvm, req, &scan_cfg->channel_cfg,
699 IEEE80211_BAND_2GHZ, &head, &tail,
703 iwl_scan_offload_build_tx_cmd(mvm, vif, ies,
705 &scan_cfg->scan_cmd.tx_cmd[1],
707 SCAN_OFFLOAD_PROBE_REQ_SIZE);
708 iwl_build_channel_cfg(mvm, req, &scan_cfg->channel_cfg,
709 IEEE80211_BAND_5GHZ, &head, &tail,
713 cmd.data[0] = scan_cfg;
714 cmd.len[0] = cmd_len;
715 cmd.dataflags[0] = IWL_HCMD_DFL_NOCOPY;
717 IWL_DEBUG_SCAN(mvm, "Sending scheduled scan config\n");
719 ret = iwl_mvm_send_cmd(mvm, &cmd);
724 int iwl_mvm_config_sched_scan_profiles(struct iwl_mvm *mvm,
725 struct cfg80211_sched_scan_request *req)
727 struct iwl_scan_offload_profile *profile;
728 struct iwl_scan_offload_profile_cfg *profile_cfg;
729 struct iwl_scan_offload_blacklist *blacklist;
730 struct iwl_host_cmd cmd = {
731 .id = SCAN_OFFLOAD_UPDATE_PROFILES_CMD,
733 .len[1] = sizeof(*profile_cfg),
734 .dataflags[0] = IWL_HCMD_DFL_NOCOPY,
735 .dataflags[1] = IWL_HCMD_DFL_NOCOPY,
741 if (WARN_ON(req->n_match_sets > IWL_SCAN_MAX_PROFILES))
744 if (mvm->fw->ucode_capa.flags & IWL_UCODE_TLV_FLAGS_SHORT_BL)
745 blacklist_len = IWL_SCAN_SHORT_BLACKLIST_LEN;
747 blacklist_len = IWL_SCAN_MAX_BLACKLIST_LEN;
749 blacklist = kzalloc(sizeof(*blacklist) * blacklist_len, GFP_KERNEL);
753 profile_cfg = kzalloc(sizeof(*profile_cfg), GFP_KERNEL);
759 cmd.data[0] = blacklist;
760 cmd.len[0] = sizeof(*blacklist) * blacklist_len;
761 cmd.data[1] = profile_cfg;
763 /* No blacklist configuration */
765 profile_cfg->num_profiles = req->n_match_sets;
766 profile_cfg->active_clients = SCAN_CLIENT_SCHED_SCAN;
767 profile_cfg->pass_match = SCAN_CLIENT_SCHED_SCAN;
768 profile_cfg->match_notify = SCAN_CLIENT_SCHED_SCAN;
770 for (i = 0; i < req->n_match_sets; i++) {
771 profile = &profile_cfg->profiles[i];
772 profile->ssid_index = i;
773 /* Support any cipher and auth algorithm */
774 profile->unicast_cipher = 0xff;
775 profile->auth_alg = 0xff;
776 profile->network_type = IWL_NETWORK_TYPE_ANY;
777 profile->band_selection = IWL_SCAN_OFFLOAD_SELECT_ANY;
778 profile->client_bitmap = SCAN_CLIENT_SCHED_SCAN;
781 IWL_DEBUG_SCAN(mvm, "Sending scheduled scan profile config\n");
783 ret = iwl_mvm_send_cmd(mvm, &cmd);
791 int iwl_mvm_sched_scan_start(struct iwl_mvm *mvm,
792 struct cfg80211_sched_scan_request *req)
794 struct iwl_scan_offload_req scan_req = {
795 .watchdog = IWL_SCHED_SCAN_WATCHDOG,
797 .schedule_line[0].iterations = IWL_FAST_SCHED_SCAN_ITERATIONS,
798 .schedule_line[0].delay = req->interval / 1000,
799 .schedule_line[0].full_scan_mul = 1,
801 .schedule_line[1].iterations = 0xff,
802 .schedule_line[1].delay = req->interval / 1000,
803 .schedule_line[1].full_scan_mul = IWL_FULL_SCAN_MULTIPLIER,
806 if (req->n_match_sets && req->match_sets[0].ssid.ssid_len) {
808 "Sending scheduled scan with filtering, filter len %d\n",
811 cpu_to_le16(IWL_SCAN_OFFLOAD_FLAG_FILTER_SSID);
814 "Sending Scheduled scan without filtering\n");
817 return iwl_mvm_send_cmd_pdu(mvm, SCAN_OFFLOAD_REQUEST_CMD, CMD_SYNC,
818 sizeof(scan_req), &scan_req);
821 static int iwl_mvm_send_sched_scan_abort(struct iwl_mvm *mvm)
824 struct iwl_host_cmd cmd = {
825 .id = SCAN_OFFLOAD_ABORT_CMD,
830 /* Exit instantly with error when device is not ready
831 * to receive scan abort command or it does not perform
832 * scheduled scan currently */
833 if (mvm->scan_status != IWL_MVM_SCAN_SCHED)
836 ret = iwl_mvm_send_cmd_status(mvm, &cmd, &status);
840 if (status != CAN_ABORT_STATUS) {
842 * The scan abort will return 1 for success or
843 * 2 for "failure". A failure condition can be
844 * due to simply not being in an active scan which
845 * can occur if we send the scan abort before the
846 * microcode has notified us that a scan is completed.
848 IWL_DEBUG_SCAN(mvm, "SCAN OFFLOAD ABORT ret %d.\n", status);
855 void iwl_mvm_sched_scan_stop(struct iwl_mvm *mvm)
859 lockdep_assert_held(&mvm->mutex);
861 if (mvm->scan_status != IWL_MVM_SCAN_SCHED) {
862 IWL_DEBUG_SCAN(mvm, "No offloaded scan to stop\n");
866 ret = iwl_mvm_send_sched_scan_abort(mvm);
868 IWL_DEBUG_SCAN(mvm, "Send stop offload scan failed %d\n", ret);
870 IWL_DEBUG_SCAN(mvm, "Successfully sent stop offload scan\n");