Johannes Berg | 8ca151b | 2013-01-24 14:25:36 +0100 | [diff] [blame] | 1 | /****************************************************************************** |
| 2 | * |
| 3 | * This file is provided under a dual BSD/GPLv2 license. When using or |
| 4 | * redistributing this file, you may do so under either license. |
| 5 | * |
| 6 | * GPL LICENSE SUMMARY |
| 7 | * |
Emmanuel Grumbach | 51368bf | 2013-12-30 13:15:54 +0200 | [diff] [blame] | 8 | * Copyright(c) 2012 - 2014 Intel Corporation. All rights reserved. |
Luciano Coelho | 9af91f4 | 2015-02-10 10:42:26 +0200 | [diff] [blame] | 9 | * Copyright(c) 2013 - 2015 Intel Mobile Communications GmbH |
Luca Coelho | a339e91 | 2016-02-02 22:58:46 +0200 | [diff] [blame] | 10 | * Copyright(c) 2016 Intel Deutschland GmbH |
Johannes Berg | 8ca151b | 2013-01-24 14:25:36 +0100 | [diff] [blame] | 11 | * |
| 12 | * This program is free software; you can redistribute it and/or modify |
| 13 | * it under the terms of version 2 of the GNU General Public License as |
| 14 | * published by the Free Software Foundation. |
| 15 | * |
| 16 | * This program is distributed in the hope that it will be useful, but |
| 17 | * WITHOUT ANY WARRANTY; without even the implied warranty of |
| 18 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU |
| 19 | * General Public License for more details. |
| 20 | * |
| 21 | * You should have received a copy of the GNU General Public License |
| 22 | * along with this program; if not, write to the Free Software |
| 23 | * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110, |
| 24 | * USA |
| 25 | * |
| 26 | * The full GNU General Public License is included in this distribution |
Emmanuel Grumbach | 410dc5a | 2013-02-18 09:22:28 +0200 | [diff] [blame] | 27 | * in the file called COPYING. |
Johannes Berg | 8ca151b | 2013-01-24 14:25:36 +0100 | [diff] [blame] | 28 | * |
| 29 | * Contact Information: |
Emmanuel Grumbach | cb2f827 | 2015-11-17 15:39:56 +0200 | [diff] [blame] | 30 | * Intel Linux Wireless <linuxwifi@intel.com> |
Johannes Berg | 8ca151b | 2013-01-24 14:25:36 +0100 | [diff] [blame] | 31 | * Intel Corporation, 5200 N.E. Elam Young Parkway, Hillsboro, OR 97124-6497 |
| 32 | * |
| 33 | * BSD LICENSE |
| 34 | * |
Emmanuel Grumbach | 51368bf | 2013-12-30 13:15:54 +0200 | [diff] [blame] | 35 | * Copyright(c) 2012 - 2014 Intel Corporation. All rights reserved. |
Luciano Coelho | 9af91f4 | 2015-02-10 10:42:26 +0200 | [diff] [blame] | 36 | * Copyright(c) 2013 - 2015 Intel Mobile Communications GmbH |
Luca Coelho | a339e91 | 2016-02-02 22:58:46 +0200 | [diff] [blame] | 37 | * Copyright(c) 2016 Intel Deutschland GmbH |
Johannes Berg | 8ca151b | 2013-01-24 14:25:36 +0100 | [diff] [blame] | 38 | * All rights reserved. |
| 39 | * |
| 40 | * Redistribution and use in source and binary forms, with or without |
| 41 | * modification, are permitted provided that the following conditions |
| 42 | * are met: |
| 43 | * |
| 44 | * * Redistributions of source code must retain the above copyright |
| 45 | * notice, this list of conditions and the following disclaimer. |
| 46 | * * Redistributions in binary form must reproduce the above copyright |
| 47 | * notice, this list of conditions and the following disclaimer in |
| 48 | * the documentation and/or other materials provided with the |
| 49 | * distribution. |
| 50 | * * Neither the name Intel Corporation nor the names of its |
| 51 | * contributors may be used to endorse or promote products derived |
| 52 | * from this software without specific prior written permission. |
| 53 | * |
| 54 | * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS |
| 55 | * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT |
| 56 | * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR |
| 57 | * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT |
| 58 | * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, |
| 59 | * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT |
| 60 | * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, |
| 61 | * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY |
| 62 | * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT |
| 63 | * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE |
| 64 | * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. |
| 65 | * |
| 66 | *****************************************************************************/ |
| 67 | |
| 68 | #include <linux/etherdevice.h> |
| 69 | #include <net/mac80211.h> |
| 70 | |
| 71 | #include "mvm.h" |
Johannes Berg | 8ca151b | 2013-01-24 14:25:36 +0100 | [diff] [blame] | 72 | #include "fw-api-scan.h" |
Luca Coelho | 728e825 | 2016-03-11 09:20:37 +0200 | [diff] [blame] | 73 | #include "iwl-io.h" |
Johannes Berg | 8ca151b | 2013-01-24 14:25:36 +0100 | [diff] [blame] | 74 | |
Haim Dreyfuss | a1ed402 | 2014-12-01 23:30:07 +0200 | [diff] [blame] | 75 | #define IWL_DENSE_EBS_SCAN_RATIO 5 |
| 76 | #define IWL_SPARSE_EBS_SCAN_RATIO 1 |
Alexander Bondar | 8a110d9 | 2014-03-12 17:31:19 +0200 | [diff] [blame] | 77 | |
David Spinadel | 9437e99 | 2015-06-22 13:20:00 +0300 | [diff] [blame] | 78 | enum iwl_mvm_traffic_load { |
| 79 | IWL_MVM_TRAFFIC_LOW, |
| 80 | IWL_MVM_TRAFFIC_MEDIUM, |
| 81 | IWL_MVM_TRAFFIC_HIGH, |
| 82 | }; |
| 83 | |
| 84 | struct iwl_mvm_scan_timing_params { |
| 85 | u32 dwell_active; |
| 86 | u32 dwell_passive; |
| 87 | u32 dwell_fragmented; |
David Spinadel | c3e230b | 2015-11-22 16:37:36 +0200 | [diff] [blame] | 88 | u32 dwell_extended; |
Alexander Bondar | 8a110d9 | 2014-03-12 17:31:19 +0200 | [diff] [blame] | 89 | u32 suspend_time; |
David Spinadel | 9437e99 | 2015-06-22 13:20:00 +0300 | [diff] [blame] | 90 | u32 max_out_time; |
| 91 | }; |
| 92 | |
| 93 | static struct iwl_mvm_scan_timing_params scan_timing[] = { |
| 94 | [IWL_SCAN_TYPE_UNASSOC] = { |
| 95 | .dwell_active = 10, |
| 96 | .dwell_passive = 110, |
| 97 | .dwell_fragmented = 44, |
David Spinadel | ca95ff3 | 2016-01-03 17:08:32 +0200 | [diff] [blame] | 98 | .dwell_extended = 90, |
David Spinadel | 9437e99 | 2015-06-22 13:20:00 +0300 | [diff] [blame] | 99 | .suspend_time = 0, |
| 100 | .max_out_time = 0, |
| 101 | }, |
| 102 | [IWL_SCAN_TYPE_WILD] = { |
| 103 | .dwell_active = 10, |
| 104 | .dwell_passive = 110, |
| 105 | .dwell_fragmented = 44, |
David Spinadel | ca95ff3 | 2016-01-03 17:08:32 +0200 | [diff] [blame] | 106 | .dwell_extended = 90, |
David Spinadel | 9437e99 | 2015-06-22 13:20:00 +0300 | [diff] [blame] | 107 | .suspend_time = 30, |
| 108 | .max_out_time = 120, |
| 109 | }, |
| 110 | [IWL_SCAN_TYPE_MILD] = { |
| 111 | .dwell_active = 10, |
| 112 | .dwell_passive = 110, |
| 113 | .dwell_fragmented = 44, |
David Spinadel | ca95ff3 | 2016-01-03 17:08:32 +0200 | [diff] [blame] | 114 | .dwell_extended = 90, |
David Spinadel | 9437e99 | 2015-06-22 13:20:00 +0300 | [diff] [blame] | 115 | .suspend_time = 120, |
| 116 | .max_out_time = 120, |
| 117 | }, |
| 118 | [IWL_SCAN_TYPE_FRAGMENTED] = { |
| 119 | .dwell_active = 10, |
| 120 | .dwell_passive = 110, |
| 121 | .dwell_fragmented = 44, |
| 122 | .suspend_time = 95, |
| 123 | .max_out_time = 44, |
| 124 | }, |
| 125 | }; |
| 126 | |
| 127 | struct iwl_mvm_scan_params { |
| 128 | enum iwl_mvm_scan_type type; |
Luciano Coelho | f7b788b | 2015-04-02 00:08:35 +0300 | [diff] [blame] | 129 | u32 n_channels; |
Luciano Coelho | 283c249 | 2015-04-17 11:18:46 +0300 | [diff] [blame] | 130 | u16 delay; |
Luciano Coelho | f7b788b | 2015-04-02 00:08:35 +0300 | [diff] [blame] | 131 | int n_ssids; |
| 132 | struct cfg80211_ssid *ssids; |
| 133 | struct ieee80211_channel **channels; |
Luciano Coelho | f7b788b | 2015-04-02 00:08:35 +0300 | [diff] [blame] | 134 | u32 flags; |
| 135 | u8 *mac_addr; |
| 136 | u8 *mac_addr_mask; |
| 137 | bool no_cck; |
| 138 | bool pass_all; |
| 139 | int n_match_sets; |
Luciano Coelho | 45d1b12 | 2015-04-15 16:34:13 +0300 | [diff] [blame] | 140 | struct iwl_scan_probe_req preq; |
Luciano Coelho | f7b788b | 2015-04-02 00:08:35 +0300 | [diff] [blame] | 141 | struct cfg80211_match_set *match_sets; |
Avraham Stern | cd55cce | 2015-08-19 12:46:12 +0300 | [diff] [blame] | 142 | int n_scan_plans; |
| 143 | struct cfg80211_sched_scan_plan *scan_plans; |
Alexander Bondar | 8a110d9 | 2014-03-12 17:31:19 +0200 | [diff] [blame] | 144 | }; |
Johannes Berg | 8ca151b | 2013-01-24 14:25:36 +0100 | [diff] [blame] | 145 | |
David Spinadel | d249622 | 2014-05-20 12:46:37 +0300 | [diff] [blame] | 146 | static u8 iwl_mvm_scan_rx_ant(struct iwl_mvm *mvm) |
| 147 | { |
| 148 | if (mvm->scan_rx_ant != ANT_NONE) |
| 149 | return mvm->scan_rx_ant; |
Moshe Harel | a054427 | 2014-12-08 21:13:14 +0200 | [diff] [blame] | 150 | return iwl_mvm_get_valid_rx_ant(mvm); |
David Spinadel | d249622 | 2014-05-20 12:46:37 +0300 | [diff] [blame] | 151 | } |
| 152 | |
Johannes Berg | 8ca151b | 2013-01-24 14:25:36 +0100 | [diff] [blame] | 153 | static inline __le16 iwl_mvm_scan_rx_chain(struct iwl_mvm *mvm) |
| 154 | { |
| 155 | u16 rx_chain; |
Oren Givon | 91b05d1 | 2013-08-19 08:36:48 +0300 | [diff] [blame] | 156 | u8 rx_ant; |
Johannes Berg | 8ca151b | 2013-01-24 14:25:36 +0100 | [diff] [blame] | 157 | |
David Spinadel | d249622 | 2014-05-20 12:46:37 +0300 | [diff] [blame] | 158 | rx_ant = iwl_mvm_scan_rx_ant(mvm); |
Johannes Berg | 8ca151b | 2013-01-24 14:25:36 +0100 | [diff] [blame] | 159 | rx_chain = rx_ant << PHY_RX_CHAIN_VALID_POS; |
| 160 | rx_chain |= rx_ant << PHY_RX_CHAIN_FORCE_MIMO_SEL_POS; |
| 161 | rx_chain |= rx_ant << PHY_RX_CHAIN_FORCE_SEL_POS; |
| 162 | rx_chain |= 0x1 << PHY_RX_CHAIN_DRIVER_FORCE_POS; |
| 163 | return cpu_to_le16(rx_chain); |
| 164 | } |
| 165 | |
Johannes Berg | 57fbcce | 2016-04-12 15:56:15 +0200 | [diff] [blame] | 166 | static __le32 iwl_mvm_scan_rxon_flags(enum nl80211_band band) |
Johannes Berg | 8ca151b | 2013-01-24 14:25:36 +0100 | [diff] [blame] | 167 | { |
Johannes Berg | 57fbcce | 2016-04-12 15:56:15 +0200 | [diff] [blame] | 168 | if (band == NL80211_BAND_2GHZ) |
Johannes Berg | 8ca151b | 2013-01-24 14:25:36 +0100 | [diff] [blame] | 169 | return cpu_to_le32(PHY_BAND_24); |
| 170 | else |
| 171 | return cpu_to_le32(PHY_BAND_5); |
| 172 | } |
| 173 | |
| 174 | static inline __le32 |
Johannes Berg | 57fbcce | 2016-04-12 15:56:15 +0200 | [diff] [blame] | 175 | iwl_mvm_scan_rate_n_flags(struct iwl_mvm *mvm, enum nl80211_band band, |
Johannes Berg | 8ca151b | 2013-01-24 14:25:36 +0100 | [diff] [blame] | 176 | bool no_cck) |
| 177 | { |
| 178 | u32 tx_ant; |
| 179 | |
| 180 | mvm->scan_last_antenna_idx = |
Moshe Harel | a054427 | 2014-12-08 21:13:14 +0200 | [diff] [blame] | 181 | iwl_mvm_next_antenna(mvm, iwl_mvm_get_valid_tx_ant(mvm), |
Johannes Berg | 8ca151b | 2013-01-24 14:25:36 +0100 | [diff] [blame] | 182 | mvm->scan_last_antenna_idx); |
| 183 | tx_ant = BIT(mvm->scan_last_antenna_idx) << RATE_MCS_ANT_POS; |
| 184 | |
Johannes Berg | 57fbcce | 2016-04-12 15:56:15 +0200 | [diff] [blame] | 185 | if (band == NL80211_BAND_2GHZ && !no_cck) |
Johannes Berg | 8ca151b | 2013-01-24 14:25:36 +0100 | [diff] [blame] | 186 | return cpu_to_le32(IWL_RATE_1M_PLCP | RATE_MCS_CCK_MSK | |
| 187 | tx_ant); |
| 188 | else |
| 189 | return cpu_to_le32(IWL_RATE_6M_PLCP | tx_ant); |
| 190 | } |
| 191 | |
Alexander Bondar | 8a110d9 | 2014-03-12 17:31:19 +0200 | [diff] [blame] | 192 | static void iwl_mvm_scan_condition_iterator(void *data, u8 *mac, |
| 193 | struct ieee80211_vif *vif) |
Haim Dreyfuss | 61f6325 | 2013-11-03 23:02:59 +0200 | [diff] [blame] | 194 | { |
Alexander Bondar | 8a110d9 | 2014-03-12 17:31:19 +0200 | [diff] [blame] | 195 | struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif); |
Haim Dreyfuss | c3f8d0a | 2014-12-02 11:03:16 +0200 | [diff] [blame] | 196 | int *global_cnt = data; |
Haim Dreyfuss | 61f6325 | 2013-11-03 23:02:59 +0200 | [diff] [blame] | 197 | |
David Spinadel | 1e2ebe0 | 2014-10-26 15:53:27 +0200 | [diff] [blame] | 198 | if (vif->type != NL80211_IFTYPE_P2P_DEVICE && mvmvif->phy_ctxt && |
| 199 | mvmvif->phy_ctxt->id < MAX_PHYS) |
Haim Dreyfuss | c3f8d0a | 2014-12-02 11:03:16 +0200 | [diff] [blame] | 200 | *global_cnt += 1; |
Alexander Bondar | 8a110d9 | 2014-03-12 17:31:19 +0200 | [diff] [blame] | 201 | } |
| 202 | |
David Spinadel | 9437e99 | 2015-06-22 13:20:00 +0300 | [diff] [blame] | 203 | static enum iwl_mvm_traffic_load iwl_mvm_get_traffic_load(struct iwl_mvm *mvm) |
| 204 | { |
| 205 | return IWL_MVM_TRAFFIC_LOW; |
| 206 | } |
| 207 | |
| 208 | static enum |
Avraham Stern | 355346b | 2015-11-26 11:22:33 +0200 | [diff] [blame] | 209 | iwl_mvm_scan_type iwl_mvm_get_scan_type(struct iwl_mvm *mvm, bool p2p_device) |
Alexander Bondar | 8a110d9 | 2014-03-12 17:31:19 +0200 | [diff] [blame] | 210 | { |
Haim Dreyfuss | c3f8d0a | 2014-12-02 11:03:16 +0200 | [diff] [blame] | 211 | int global_cnt = 0; |
David Spinadel | 9437e99 | 2015-06-22 13:20:00 +0300 | [diff] [blame] | 212 | enum iwl_mvm_traffic_load load; |
| 213 | bool low_latency; |
Alexander Bondar | 8a110d9 | 2014-03-12 17:31:19 +0200 | [diff] [blame] | 214 | |
| 215 | ieee80211_iterate_active_interfaces_atomic(mvm->hw, |
| 216 | IEEE80211_IFACE_ITER_NORMAL, |
| 217 | iwl_mvm_scan_condition_iterator, |
Haim Dreyfuss | c3f8d0a | 2014-12-02 11:03:16 +0200 | [diff] [blame] | 218 | &global_cnt); |
Haim Dreyfuss | c3f8d0a | 2014-12-02 11:03:16 +0200 | [diff] [blame] | 219 | if (!global_cnt) |
David Spinadel | 9437e99 | 2015-06-22 13:20:00 +0300 | [diff] [blame] | 220 | return IWL_SCAN_TYPE_UNASSOC; |
Alexander Bondar | ef67f18d | 2014-03-30 10:47:08 +0300 | [diff] [blame] | 221 | |
David Spinadel | 9437e99 | 2015-06-22 13:20:00 +0300 | [diff] [blame] | 222 | load = iwl_mvm_get_traffic_load(mvm); |
| 223 | low_latency = iwl_mvm_low_latency(mvm); |
Alexander Bondar | ef67f18d | 2014-03-30 10:47:08 +0300 | [diff] [blame] | 224 | |
Avraham Stern | 355346b | 2015-11-26 11:22:33 +0200 | [diff] [blame] | 225 | if ((load == IWL_MVM_TRAFFIC_HIGH || low_latency) && !p2p_device && |
David Spinadel | 9437e99 | 2015-06-22 13:20:00 +0300 | [diff] [blame] | 226 | fw_has_api(&mvm->fw->ucode_capa, IWL_UCODE_TLV_API_FRAGMENTED_SCAN)) |
| 227 | return IWL_SCAN_TYPE_FRAGMENTED; |
Johannes Berg | 859d914 | 2015-06-01 17:11:11 +0200 | [diff] [blame] | 228 | |
David Spinadel | 9437e99 | 2015-06-22 13:20:00 +0300 | [diff] [blame] | 229 | if (load >= IWL_MVM_TRAFFIC_MEDIUM || low_latency) |
| 230 | return IWL_SCAN_TYPE_MILD; |
David Spinadel | 2ce89cd | 2014-07-22 13:11:18 +0300 | [diff] [blame] | 231 | |
David Spinadel | 9437e99 | 2015-06-22 13:20:00 +0300 | [diff] [blame] | 232 | return IWL_SCAN_TYPE_WILD; |
Haim Dreyfuss | 61f6325 | 2013-11-03 23:02:59 +0200 | [diff] [blame] | 233 | } |
| 234 | |
Andrei Otcheretianski | 73897bd | 2014-07-09 18:59:14 +0300 | [diff] [blame] | 235 | static inline bool iwl_mvm_rrm_scan_needed(struct iwl_mvm *mvm) |
| 236 | { |
| 237 | /* require rrm scan whenever the fw supports it */ |
Johannes Berg | 859d914 | 2015-06-01 17:11:11 +0200 | [diff] [blame] | 238 | return fw_has_capa(&mvm->fw->ucode_capa, |
| 239 | IWL_UCODE_TLV_CAPA_DS_PARAM_SET_IE_SUPPORT); |
Andrei Otcheretianski | 73897bd | 2014-07-09 18:59:14 +0300 | [diff] [blame] | 240 | } |
| 241 | |
Luciano Coelho | 999d256 | 2015-03-27 10:28:26 +0300 | [diff] [blame] | 242 | static int iwl_mvm_max_scan_ie_fw_cmd_room(struct iwl_mvm *mvm) |
Andrei Otcheretianski | 48849a4 | 2014-09-09 10:58:49 +0300 | [diff] [blame] | 243 | { |
| 244 | int max_probe_len; |
| 245 | |
Luciano Coelho | 1f94038 | 2015-02-10 13:03:38 +0200 | [diff] [blame] | 246 | max_probe_len = SCAN_OFFLOAD_PROBE_REQ_SIZE; |
Andrei Otcheretianski | 48849a4 | 2014-09-09 10:58:49 +0300 | [diff] [blame] | 247 | |
| 248 | /* we create the 802.11 header and SSID element */ |
| 249 | max_probe_len -= 24 + 2; |
| 250 | |
Andrei Otcheretianski | 66dc527 | 2014-09-02 17:55:40 +0300 | [diff] [blame] | 251 | /* DS parameter set element is added on 2.4GHZ band if required */ |
| 252 | if (iwl_mvm_rrm_scan_needed(mvm)) |
| 253 | max_probe_len -= 3; |
| 254 | |
Andrei Otcheretianski | 48849a4 | 2014-09-09 10:58:49 +0300 | [diff] [blame] | 255 | return max_probe_len; |
| 256 | } |
| 257 | |
Luciano Coelho | 999d256 | 2015-03-27 10:28:26 +0300 | [diff] [blame] | 258 | int iwl_mvm_max_scan_ie_len(struct iwl_mvm *mvm) |
Andrei Otcheretianski | 48849a4 | 2014-09-09 10:58:49 +0300 | [diff] [blame] | 259 | { |
Luciano Coelho | 999d256 | 2015-03-27 10:28:26 +0300 | [diff] [blame] | 260 | int max_ie_len = iwl_mvm_max_scan_ie_fw_cmd_room(mvm); |
Andrei Otcheretianski | 48849a4 | 2014-09-09 10:58:49 +0300 | [diff] [blame] | 261 | |
Andrei Otcheretianski | 48849a4 | 2014-09-09 10:58:49 +0300 | [diff] [blame] | 262 | /* TODO: [BUG] This function should return the maximum allowed size of |
| 263 | * scan IEs, however the LMAC scan api contains both 2GHZ and 5GHZ IEs |
| 264 | * in the same command. So the correct implementation of this function |
| 265 | * is just iwl_mvm_max_scan_ie_fw_cmd_room() / 2. Currently the scan |
| 266 | * command has only 512 bytes and it would leave us with about 240 |
| 267 | * bytes for scan IEs, which is clearly not enough. So meanwhile |
| 268 | * we will report an incorrect value. This may result in a failure to |
| 269 | * issue a scan in unified_scan_lmac and unified_sched_scan_lmac |
| 270 | * functions with -ENOBUFS, if a large enough probe will be provided. |
| 271 | */ |
| 272 | return max_ie_len; |
| 273 | } |
| 274 | |
Avraham Stern | 1fa1bcc | 2015-03-31 16:22:33 +0300 | [diff] [blame] | 275 | static u8 *iwl_mvm_dump_channel_list(struct iwl_scan_results_notif *res, |
| 276 | int num_res, u8 *buf, size_t buf_size) |
| 277 | { |
| 278 | int i; |
| 279 | u8 *pos = buf, *end = buf + buf_size; |
| 280 | |
| 281 | for (i = 0; pos < end && i < num_res; i++) |
| 282 | pos += snprintf(pos, end - pos, " %u", res[i].channel); |
| 283 | |
| 284 | /* terminate the string in case the buffer was too short */ |
| 285 | *(buf + buf_size - 1) = '\0'; |
| 286 | |
| 287 | return buf; |
| 288 | } |
| 289 | |
Johannes Berg | 0416841 | 2015-06-23 21:22:09 +0200 | [diff] [blame] | 290 | void iwl_mvm_rx_lmac_scan_iter_complete_notif(struct iwl_mvm *mvm, |
| 291 | struct iwl_rx_cmd_buffer *rxb) |
Alexander Bondar | e5d7464 | 2014-12-09 19:15:49 +0200 | [diff] [blame] | 292 | { |
| 293 | struct iwl_rx_packet *pkt = rxb_addr(rxb); |
Avraham Stern | 1083fd7 | 2015-03-31 16:14:41 +0300 | [diff] [blame] | 294 | struct iwl_lmac_scan_complete_notif *notif = (void *)pkt->data; |
Avraham Stern | 1fa1bcc | 2015-03-31 16:22:33 +0300 | [diff] [blame] | 295 | u8 buf[256]; |
Alexander Bondar | e5d7464 | 2014-12-09 19:15:49 +0200 | [diff] [blame] | 296 | |
| 297 | IWL_DEBUG_SCAN(mvm, |
Avraham Stern | 1fa1bcc | 2015-03-31 16:22:33 +0300 | [diff] [blame] | 298 | "Scan offload iteration complete: status=0x%x scanned channels=%d channels list: %s\n", |
| 299 | notif->status, notif->scanned_channels, |
| 300 | iwl_mvm_dump_channel_list(notif->results, |
| 301 | notif->scanned_channels, buf, |
| 302 | sizeof(buf))); |
Luca Coelho | a339e91 | 2016-02-02 22:58:46 +0200 | [diff] [blame] | 303 | |
| 304 | if (mvm->sched_scan_pass_all == SCHED_SCAN_PASS_ALL_FOUND) { |
| 305 | IWL_DEBUG_SCAN(mvm, "Pass all scheduled scan results found\n"); |
| 306 | ieee80211_sched_scan_results(mvm->hw); |
| 307 | mvm->sched_scan_pass_all = SCHED_SCAN_PASS_ALL_ENABLED; |
| 308 | } |
Alexander Bondar | e5d7464 | 2014-12-09 19:15:49 +0200 | [diff] [blame] | 309 | } |
| 310 | |
Johannes Berg | 0416841 | 2015-06-23 21:22:09 +0200 | [diff] [blame] | 311 | void iwl_mvm_rx_scan_match_found(struct iwl_mvm *mvm, |
| 312 | struct iwl_rx_cmd_buffer *rxb) |
David Spinadel | 35a000b | 2013-08-28 09:29:43 +0300 | [diff] [blame] | 313 | { |
David Spinadel | d249622 | 2014-05-20 12:46:37 +0300 | [diff] [blame] | 314 | IWL_DEBUG_SCAN(mvm, "Scheduled scan results\n"); |
| 315 | ieee80211_sched_scan_results(mvm->hw); |
David Spinadel | 35a000b | 2013-08-28 09:29:43 +0300 | [diff] [blame] | 316 | } |
| 317 | |
David Spinadel | f0bf859 | 2015-05-20 11:56:59 +0300 | [diff] [blame] | 318 | static const char *iwl_mvm_ebs_status_str(enum iwl_scan_ebs_status status) |
| 319 | { |
| 320 | switch (status) { |
| 321 | case IWL_SCAN_EBS_SUCCESS: |
| 322 | return "successful"; |
| 323 | case IWL_SCAN_EBS_INACTIVE: |
| 324 | return "inactive"; |
| 325 | case IWL_SCAN_EBS_FAILED: |
| 326 | case IWL_SCAN_EBS_CHAN_NOT_FOUND: |
| 327 | default: |
| 328 | return "failed"; |
| 329 | } |
| 330 | } |
| 331 | |
Johannes Berg | 0416841 | 2015-06-23 21:22:09 +0200 | [diff] [blame] | 332 | void iwl_mvm_rx_lmac_scan_complete_notif(struct iwl_mvm *mvm, |
| 333 | struct iwl_rx_cmd_buffer *rxb) |
David Spinadel | 35a000b | 2013-08-28 09:29:43 +0300 | [diff] [blame] | 334 | { |
| 335 | struct iwl_rx_packet *pkt = rxb_addr(rxb); |
Luciano Coelho | 9af91f4 | 2015-02-10 10:42:26 +0200 | [diff] [blame] | 336 | struct iwl_periodic_scan_complete *scan_notif = (void *)pkt->data; |
| 337 | bool aborted = (scan_notif->status == IWL_SCAN_OFFLOAD_ABORTED); |
David Spinadel | fb98be5 | 2014-05-04 12:51:10 +0300 | [diff] [blame] | 338 | |
Luca Coelho | 72a33568 | 2015-11-06 10:57:11 +0200 | [diff] [blame] | 339 | /* If this happens, the firmware has mistakenly sent an LMAC |
| 340 | * notification during UMAC scans -- warn and ignore it. |
| 341 | */ |
| 342 | if (WARN_ON_ONCE(fw_has_capa(&mvm->fw->ucode_capa, |
| 343 | IWL_UCODE_TLV_CAPA_UMAC_SCAN))) |
| 344 | return; |
| 345 | |
Johannes Berg | a6623e8 | 2014-01-27 15:40:53 +0100 | [diff] [blame] | 346 | /* scan status must be locked for proper checking */ |
| 347 | lockdep_assert_held(&mvm->mutex); |
| 348 | |
Luciano Coelho | 9af91f4 | 2015-02-10 10:42:26 +0200 | [diff] [blame] | 349 | /* We first check if we were stopping a scan, in which case we |
| 350 | * just clear the stopping flag. Then we check if it was a |
| 351 | * firmware initiated stop, in which case we need to inform |
| 352 | * mac80211. |
| 353 | * Note that we can have a stopping and a running scan |
| 354 | * simultaneously, but we can't have two different types of |
| 355 | * scans stopping or running at the same time (since LMAC |
| 356 | * doesn't support it). |
| 357 | */ |
Haim Dreyfuss | e820c2d | 2014-04-06 11:19:09 +0300 | [diff] [blame] | 358 | |
Luciano Coelho | 9af91f4 | 2015-02-10 10:42:26 +0200 | [diff] [blame] | 359 | if (mvm->scan_status & IWL_MVM_SCAN_STOPPING_SCHED) { |
| 360 | WARN_ON_ONCE(mvm->scan_status & IWL_MVM_SCAN_STOPPING_REGULAR); |
David Spinadel | 35a000b | 2013-08-28 09:29:43 +0300 | [diff] [blame] | 361 | |
Ayala Beker | a7b3bc9 | 2015-08-20 04:00:38 +0300 | [diff] [blame] | 362 | IWL_DEBUG_SCAN(mvm, "Scheduled scan %s, EBS status %s\n", |
Luciano Coelho | 9af91f4 | 2015-02-10 10:42:26 +0200 | [diff] [blame] | 363 | aborted ? "aborted" : "completed", |
Ayala Beker | a7b3bc9 | 2015-08-20 04:00:38 +0300 | [diff] [blame] | 364 | iwl_mvm_ebs_status_str(scan_notif->ebs_status)); |
| 365 | IWL_DEBUG_SCAN(mvm, |
| 366 | "Last line %d, Last iteration %d, Time after last iteration %d\n", |
Ayala Beker | 1a84e77 | 2015-07-22 13:54:31 +0300 | [diff] [blame] | 367 | scan_notif->last_schedule_line, |
| 368 | scan_notif->last_schedule_iteration, |
| 369 | __le32_to_cpu(scan_notif->time_after_last_iter)); |
Luciano Coelho | 9af91f4 | 2015-02-10 10:42:26 +0200 | [diff] [blame] | 370 | |
| 371 | mvm->scan_status &= ~IWL_MVM_SCAN_STOPPING_SCHED; |
| 372 | } else if (mvm->scan_status & IWL_MVM_SCAN_STOPPING_REGULAR) { |
| 373 | IWL_DEBUG_SCAN(mvm, "Regular scan %s, EBS status %s\n", |
| 374 | aborted ? "aborted" : "completed", |
David Spinadel | f0bf859 | 2015-05-20 11:56:59 +0300 | [diff] [blame] | 375 | iwl_mvm_ebs_status_str(scan_notif->ebs_status)); |
Luciano Coelho | 9af91f4 | 2015-02-10 10:42:26 +0200 | [diff] [blame] | 376 | |
| 377 | mvm->scan_status &= ~IWL_MVM_SCAN_STOPPING_REGULAR; |
| 378 | } else if (mvm->scan_status & IWL_MVM_SCAN_SCHED) { |
| 379 | WARN_ON_ONCE(mvm->scan_status & IWL_MVM_SCAN_REGULAR); |
| 380 | |
Ayala Beker | a7b3bc9 | 2015-08-20 04:00:38 +0300 | [diff] [blame] | 381 | IWL_DEBUG_SCAN(mvm, "Scheduled scan %s, EBS status %s\n", |
Luciano Coelho | 9af91f4 | 2015-02-10 10:42:26 +0200 | [diff] [blame] | 382 | aborted ? "aborted" : "completed", |
Ayala Beker | a7b3bc9 | 2015-08-20 04:00:38 +0300 | [diff] [blame] | 383 | iwl_mvm_ebs_status_str(scan_notif->ebs_status)); |
| 384 | IWL_DEBUG_SCAN(mvm, |
| 385 | "Last line %d, Last iteration %d, Time after last iteration %d (FW)\n", |
Ayala Beker | 1a84e77 | 2015-07-22 13:54:31 +0300 | [diff] [blame] | 386 | scan_notif->last_schedule_line, |
| 387 | scan_notif->last_schedule_iteration, |
| 388 | __le32_to_cpu(scan_notif->time_after_last_iter)); |
Luciano Coelho | 9af91f4 | 2015-02-10 10:42:26 +0200 | [diff] [blame] | 389 | |
| 390 | mvm->scan_status &= ~IWL_MVM_SCAN_SCHED; |
Arik Nemtsov | 33ea27f | 2014-02-10 15:34:29 +0200 | [diff] [blame] | 391 | ieee80211_sched_scan_stopped(mvm->hw); |
Luca Coelho | a339e91 | 2016-02-02 22:58:46 +0200 | [diff] [blame] | 392 | mvm->sched_scan_pass_all = SCHED_SCAN_PASS_ALL_DISABLED; |
Luciano Coelho | 9af91f4 | 2015-02-10 10:42:26 +0200 | [diff] [blame] | 393 | } else if (mvm->scan_status & IWL_MVM_SCAN_REGULAR) { |
Avraham Stern | 7947d3e | 2016-07-05 15:23:12 +0300 | [diff] [blame] | 394 | struct cfg80211_scan_info info = { |
| 395 | .aborted = aborted, |
| 396 | }; |
| 397 | |
Luciano Coelho | 9af91f4 | 2015-02-10 10:42:26 +0200 | [diff] [blame] | 398 | IWL_DEBUG_SCAN(mvm, "Regular scan %s, EBS status %s (FW)\n", |
| 399 | aborted ? "aborted" : "completed", |
David Spinadel | f0bf859 | 2015-05-20 11:56:59 +0300 | [diff] [blame] | 400 | iwl_mvm_ebs_status_str(scan_notif->ebs_status)); |
Luciano Coelho | 9af91f4 | 2015-02-10 10:42:26 +0200 | [diff] [blame] | 401 | |
| 402 | mvm->scan_status &= ~IWL_MVM_SCAN_REGULAR; |
Avraham Stern | 7947d3e | 2016-07-05 15:23:12 +0300 | [diff] [blame] | 403 | ieee80211_scan_completed(mvm->hw, &info); |
Eliad Peller | 4ff7818 | 2014-06-22 14:44:44 +0300 | [diff] [blame] | 404 | iwl_mvm_unref(mvm, IWL_MVM_REF_SCAN); |
Luca Coelho | 69e0464 | 2016-05-03 12:18:33 +0300 | [diff] [blame] | 405 | cancel_delayed_work(&mvm->scan_timeout_dwork); |
Luca Coelho | 728e825 | 2016-03-11 09:20:37 +0200 | [diff] [blame] | 406 | } else { |
| 407 | IWL_ERR(mvm, |
| 408 | "got scan complete notification but no scan is running\n"); |
Arik Nemtsov | 33ea27f | 2014-02-10 15:34:29 +0200 | [diff] [blame] | 409 | } |
David Spinadel | 35a000b | 2013-08-28 09:29:43 +0300 | [diff] [blame] | 410 | |
David Spinadel | f0bf859 | 2015-05-20 11:56:59 +0300 | [diff] [blame] | 411 | mvm->last_ebs_successful = |
| 412 | scan_notif->ebs_status == IWL_SCAN_EBS_SUCCESS || |
| 413 | scan_notif->ebs_status == IWL_SCAN_EBS_INACTIVE; |
David Spinadel | 35a000b | 2013-08-28 09:29:43 +0300 | [diff] [blame] | 414 | } |
| 415 | |
David Spinadel | 35a000b | 2013-08-28 09:29:43 +0300 | [diff] [blame] | 416 | static int iwl_ssid_exist(u8 *ssid, u8 ssid_len, struct iwl_ssid_ie *ssid_list) |
| 417 | { |
| 418 | int i; |
| 419 | |
| 420 | for (i = 0; i < PROBE_OPTION_MAX; i++) { |
| 421 | if (!ssid_list[i].len) |
| 422 | break; |
| 423 | if (ssid_list[i].len == ssid_len && |
| 424 | !memcmp(ssid_list->ssid, ssid, ssid_len)) |
| 425 | return i; |
| 426 | } |
| 427 | return -1; |
| 428 | } |
| 429 | |
Luciano Coelho | e2ec4f6 | 2015-04-02 17:49:04 +0300 | [diff] [blame] | 430 | /* We insert the SSIDs in an inverted order, because the FW will |
| 431 | * invert it back. |
| 432 | */ |
| 433 | static void iwl_scan_build_ssids(struct iwl_mvm_scan_params *params, |
| 434 | struct iwl_ssid_ie *ssids, |
| 435 | u32 *ssid_bitmap) |
David Spinadel | 35a000b | 2013-08-28 09:29:43 +0300 | [diff] [blame] | 436 | { |
| 437 | int i, j; |
| 438 | int index; |
| 439 | |
| 440 | /* |
| 441 | * copy SSIDs from match list. |
| 442 | * iwl_config_sched_scan_profiles() uses the order of these ssids to |
| 443 | * config match list. |
| 444 | */ |
Luciano Coelho | 1c1b5b2 | 2015-04-02 16:31:42 +0300 | [diff] [blame] | 445 | for (i = 0, j = params->n_match_sets - 1; |
| 446 | j >= 0 && i < PROBE_OPTION_MAX; |
| 447 | i++, j--) { |
Johannes Berg | ea73cbc | 2014-01-24 10:53:53 +0100 | [diff] [blame] | 448 | /* skip empty SSID matchsets */ |
Luciano Coelho | 1c1b5b2 | 2015-04-02 16:31:42 +0300 | [diff] [blame] | 449 | if (!params->match_sets[j].ssid.ssid_len) |
Johannes Berg | ea73cbc | 2014-01-24 10:53:53 +0100 | [diff] [blame] | 450 | continue; |
Luciano Coelho | e2ec4f6 | 2015-04-02 17:49:04 +0300 | [diff] [blame] | 451 | ssids[i].id = WLAN_EID_SSID; |
| 452 | ssids[i].len = params->match_sets[j].ssid.ssid_len; |
| 453 | memcpy(ssids[i].ssid, params->match_sets[j].ssid.ssid, |
| 454 | ssids[i].len); |
David Spinadel | 35a000b | 2013-08-28 09:29:43 +0300 | [diff] [blame] | 455 | } |
| 456 | |
| 457 | /* add SSIDs from scan SSID list */ |
| 458 | *ssid_bitmap = 0; |
Luciano Coelho | 1c1b5b2 | 2015-04-02 16:31:42 +0300 | [diff] [blame] | 459 | for (j = params->n_ssids - 1; |
| 460 | j >= 0 && i < PROBE_OPTION_MAX; |
| 461 | i++, j--) { |
Luciano Coelho | f7b788b | 2015-04-02 00:08:35 +0300 | [diff] [blame] | 462 | index = iwl_ssid_exist(params->ssids[j].ssid, |
| 463 | params->ssids[j].ssid_len, |
Luciano Coelho | e2ec4f6 | 2015-04-02 17:49:04 +0300 | [diff] [blame] | 464 | ssids); |
David Spinadel | 35a000b | 2013-08-28 09:29:43 +0300 | [diff] [blame] | 465 | if (index < 0) { |
Luciano Coelho | e2ec4f6 | 2015-04-02 17:49:04 +0300 | [diff] [blame] | 466 | ssids[i].id = WLAN_EID_SSID; |
| 467 | ssids[i].len = params->ssids[j].ssid_len; |
| 468 | memcpy(ssids[i].ssid, params->ssids[j].ssid, |
| 469 | ssids[i].len); |
| 470 | *ssid_bitmap |= BIT(i); |
David Spinadel | 35a000b | 2013-08-28 09:29:43 +0300 | [diff] [blame] | 471 | } else { |
Luciano Coelho | e2ec4f6 | 2015-04-02 17:49:04 +0300 | [diff] [blame] | 472 | *ssid_bitmap |= BIT(index); |
David Spinadel | 35a000b | 2013-08-28 09:29:43 +0300 | [diff] [blame] | 473 | } |
| 474 | } |
| 475 | } |
| 476 | |
Luciano Coelho | 416c9b5 | 2015-05-05 11:32:29 +0300 | [diff] [blame] | 477 | static int |
| 478 | iwl_mvm_config_sched_scan_profiles(struct iwl_mvm *mvm, |
| 479 | struct cfg80211_sched_scan_request *req) |
David Spinadel | 35a000b | 2013-08-28 09:29:43 +0300 | [diff] [blame] | 480 | { |
| 481 | struct iwl_scan_offload_profile *profile; |
| 482 | struct iwl_scan_offload_profile_cfg *profile_cfg; |
| 483 | struct iwl_scan_offload_blacklist *blacklist; |
| 484 | struct iwl_host_cmd cmd = { |
| 485 | .id = SCAN_OFFLOAD_UPDATE_PROFILES_CMD, |
David Spinadel | 35a000b | 2013-08-28 09:29:43 +0300 | [diff] [blame] | 486 | .len[1] = sizeof(*profile_cfg), |
| 487 | .dataflags[0] = IWL_HCMD_DFL_NOCOPY, |
| 488 | .dataflags[1] = IWL_HCMD_DFL_NOCOPY, |
| 489 | }; |
| 490 | int blacklist_len; |
| 491 | int i; |
| 492 | int ret; |
| 493 | |
| 494 | if (WARN_ON(req->n_match_sets > IWL_SCAN_MAX_PROFILES)) |
Johannes Berg | 46eebec | 2015-09-11 12:09:22 +0200 | [diff] [blame] | 495 | return -EIO; |
David Spinadel | 35a000b | 2013-08-28 09:29:43 +0300 | [diff] [blame] | 496 | |
| 497 | if (mvm->fw->ucode_capa.flags & IWL_UCODE_TLV_FLAGS_SHORT_BL) |
| 498 | blacklist_len = IWL_SCAN_SHORT_BLACKLIST_LEN; |
| 499 | else |
| 500 | blacklist_len = IWL_SCAN_MAX_BLACKLIST_LEN; |
| 501 | |
| 502 | blacklist = kzalloc(sizeof(*blacklist) * blacklist_len, GFP_KERNEL); |
| 503 | if (!blacklist) |
| 504 | return -ENOMEM; |
| 505 | |
| 506 | profile_cfg = kzalloc(sizeof(*profile_cfg), GFP_KERNEL); |
| 507 | if (!profile_cfg) { |
| 508 | ret = -ENOMEM; |
| 509 | goto free_blacklist; |
| 510 | } |
| 511 | |
| 512 | cmd.data[0] = blacklist; |
| 513 | cmd.len[0] = sizeof(*blacklist) * blacklist_len; |
| 514 | cmd.data[1] = profile_cfg; |
| 515 | |
| 516 | /* No blacklist configuration */ |
| 517 | |
| 518 | profile_cfg->num_profiles = req->n_match_sets; |
| 519 | profile_cfg->active_clients = SCAN_CLIENT_SCHED_SCAN; |
| 520 | profile_cfg->pass_match = SCAN_CLIENT_SCHED_SCAN; |
| 521 | profile_cfg->match_notify = SCAN_CLIENT_SCHED_SCAN; |
David Spinadel | 6e0bbe5 | 2013-12-30 09:59:45 +0200 | [diff] [blame] | 522 | if (!req->n_match_sets || !req->match_sets[0].ssid.ssid_len) |
| 523 | profile_cfg->any_beacon_notify = SCAN_CLIENT_SCHED_SCAN; |
David Spinadel | 35a000b | 2013-08-28 09:29:43 +0300 | [diff] [blame] | 524 | |
| 525 | for (i = 0; i < req->n_match_sets; i++) { |
| 526 | profile = &profile_cfg->profiles[i]; |
| 527 | profile->ssid_index = i; |
| 528 | /* Support any cipher and auth algorithm */ |
| 529 | profile->unicast_cipher = 0xff; |
| 530 | profile->auth_alg = 0xff; |
| 531 | profile->network_type = IWL_NETWORK_TYPE_ANY; |
| 532 | profile->band_selection = IWL_SCAN_OFFLOAD_SELECT_ANY; |
| 533 | profile->client_bitmap = SCAN_CLIENT_SCHED_SCAN; |
| 534 | } |
| 535 | |
| 536 | IWL_DEBUG_SCAN(mvm, "Sending scheduled scan profile config\n"); |
| 537 | |
| 538 | ret = iwl_mvm_send_cmd(mvm, &cmd); |
| 539 | kfree(profile_cfg); |
| 540 | free_blacklist: |
| 541 | kfree(blacklist); |
| 542 | |
| 543 | return ret; |
| 544 | } |
| 545 | |
David Spinadel | d249622 | 2014-05-20 12:46:37 +0300 | [diff] [blame] | 546 | static bool iwl_mvm_scan_pass_all(struct iwl_mvm *mvm, |
| 547 | struct cfg80211_sched_scan_request *req) |
| 548 | { |
| 549 | if (req->n_match_sets && req->match_sets[0].ssid.ssid_len) { |
| 550 | IWL_DEBUG_SCAN(mvm, |
| 551 | "Sending scheduled scan with filtering, n_match_sets %d\n", |
| 552 | req->n_match_sets); |
Luca Coelho | a339e91 | 2016-02-02 22:58:46 +0200 | [diff] [blame] | 553 | mvm->sched_scan_pass_all = SCHED_SCAN_PASS_ALL_DISABLED; |
David Spinadel | d249622 | 2014-05-20 12:46:37 +0300 | [diff] [blame] | 554 | return false; |
| 555 | } |
| 556 | |
| 557 | IWL_DEBUG_SCAN(mvm, "Sending Scheduled scan without filtering\n"); |
Luca Coelho | a339e91 | 2016-02-02 22:58:46 +0200 | [diff] [blame] | 558 | |
| 559 | mvm->sched_scan_pass_all = SCHED_SCAN_PASS_ALL_ENABLED; |
David Spinadel | d249622 | 2014-05-20 12:46:37 +0300 | [diff] [blame] | 560 | return true; |
| 561 | } |
| 562 | |
Luciano Coelho | f246179 | 2015-05-07 15:23:19 +0300 | [diff] [blame] | 563 | static int iwl_mvm_lmac_scan_abort(struct iwl_mvm *mvm) |
David Spinadel | 35a000b | 2013-08-28 09:29:43 +0300 | [diff] [blame] | 564 | { |
| 565 | int ret; |
| 566 | struct iwl_host_cmd cmd = { |
| 567 | .id = SCAN_OFFLOAD_ABORT_CMD, |
David Spinadel | 35a000b | 2013-08-28 09:29:43 +0300 | [diff] [blame] | 568 | }; |
| 569 | u32 status; |
| 570 | |
David Spinadel | 35a000b | 2013-08-28 09:29:43 +0300 | [diff] [blame] | 571 | ret = iwl_mvm_send_cmd_status(mvm, &cmd, &status); |
| 572 | if (ret) |
| 573 | return ret; |
| 574 | |
| 575 | if (status != CAN_ABORT_STATUS) { |
| 576 | /* |
| 577 | * The scan abort will return 1 for success or |
| 578 | * 2 for "failure". A failure condition can be |
| 579 | * due to simply not being in an active scan which |
| 580 | * can occur if we send the scan abort before the |
| 581 | * microcode has notified us that a scan is completed. |
| 582 | */ |
| 583 | IWL_DEBUG_SCAN(mvm, "SCAN OFFLOAD ABORT ret %d.\n", status); |
Arik Nemtsov | 33ea27f | 2014-02-10 15:34:29 +0200 | [diff] [blame] | 584 | ret = -ENOENT; |
David Spinadel | 35a000b | 2013-08-28 09:29:43 +0300 | [diff] [blame] | 585 | } |
| 586 | |
| 587 | return ret; |
| 588 | } |
| 589 | |
Luciano Coelho | 65ff556 | 2015-03-20 13:35:47 +0200 | [diff] [blame] | 590 | static void iwl_mvm_scan_fill_tx_cmd(struct iwl_mvm *mvm, |
| 591 | struct iwl_scan_req_tx_cmd *tx_cmd, |
| 592 | bool no_cck) |
David Spinadel | fb98be5 | 2014-05-04 12:51:10 +0300 | [diff] [blame] | 593 | { |
| 594 | tx_cmd[0].tx_flags = cpu_to_le32(TX_CMD_FLG_SEQ_CTL | |
| 595 | TX_CMD_FLG_BT_DIS); |
| 596 | tx_cmd[0].rate_n_flags = iwl_mvm_scan_rate_n_flags(mvm, |
Johannes Berg | 57fbcce | 2016-04-12 15:56:15 +0200 | [diff] [blame] | 597 | NL80211_BAND_2GHZ, |
David Spinadel | fb98be5 | 2014-05-04 12:51:10 +0300 | [diff] [blame] | 598 | no_cck); |
| 599 | tx_cmd[0].sta_id = mvm->aux_sta.sta_id; |
| 600 | |
| 601 | tx_cmd[1].tx_flags = cpu_to_le32(TX_CMD_FLG_SEQ_CTL | |
| 602 | TX_CMD_FLG_BT_DIS); |
| 603 | tx_cmd[1].rate_n_flags = iwl_mvm_scan_rate_n_flags(mvm, |
Johannes Berg | 57fbcce | 2016-04-12 15:56:15 +0200 | [diff] [blame] | 604 | NL80211_BAND_5GHZ, |
David Spinadel | fb98be5 | 2014-05-04 12:51:10 +0300 | [diff] [blame] | 605 | no_cck); |
| 606 | tx_cmd[1].sta_id = mvm->aux_sta.sta_id; |
| 607 | } |
| 608 | |
| 609 | static void |
| 610 | iwl_mvm_lmac_scan_cfg_channels(struct iwl_mvm *mvm, |
| 611 | struct ieee80211_channel **channels, |
| 612 | int n_channels, u32 ssid_bitmap, |
Luciano Coelho | 65ff556 | 2015-03-20 13:35:47 +0200 | [diff] [blame] | 613 | struct iwl_scan_req_lmac *cmd) |
David Spinadel | fb98be5 | 2014-05-04 12:51:10 +0300 | [diff] [blame] | 614 | { |
| 615 | struct iwl_scan_channel_cfg_lmac *channel_cfg = (void *)&cmd->data; |
| 616 | int i; |
| 617 | |
| 618 | for (i = 0; i < n_channels; i++) { |
| 619 | channel_cfg[i].channel_num = |
| 620 | cpu_to_le16(channels[i]->hw_value); |
| 621 | channel_cfg[i].iter_count = cpu_to_le16(1); |
| 622 | channel_cfg[i].iter_interval = 0; |
| 623 | channel_cfg[i].flags = |
| 624 | cpu_to_le32(IWL_UNIFIED_SCAN_CHANNEL_PARTIAL | |
| 625 | ssid_bitmap); |
| 626 | } |
| 627 | } |
| 628 | |
Andrei Otcheretianski | 66dc527 | 2014-09-02 17:55:40 +0300 | [diff] [blame] | 629 | static u8 *iwl_mvm_copy_and_insert_ds_elem(struct iwl_mvm *mvm, const u8 *ies, |
| 630 | size_t len, u8 *const pos) |
| 631 | { |
| 632 | static const u8 before_ds_params[] = { |
| 633 | WLAN_EID_SSID, |
| 634 | WLAN_EID_SUPP_RATES, |
| 635 | WLAN_EID_REQUEST, |
| 636 | WLAN_EID_EXT_SUPP_RATES, |
| 637 | }; |
| 638 | size_t offs; |
| 639 | u8 *newpos = pos; |
| 640 | |
| 641 | if (!iwl_mvm_rrm_scan_needed(mvm)) { |
| 642 | memcpy(newpos, ies, len); |
| 643 | return newpos + len; |
| 644 | } |
| 645 | |
| 646 | offs = ieee80211_ie_split(ies, len, |
| 647 | before_ds_params, |
| 648 | ARRAY_SIZE(before_ds_params), |
| 649 | 0); |
| 650 | |
| 651 | memcpy(newpos, ies, offs); |
| 652 | newpos += offs; |
| 653 | |
| 654 | /* Add a placeholder for DS Parameter Set element */ |
| 655 | *newpos++ = WLAN_EID_DS_PARAMS; |
| 656 | *newpos++ = 1; |
| 657 | *newpos++ = 0; |
| 658 | |
| 659 | memcpy(newpos, ies + offs, len - offs); |
| 660 | newpos += len - offs; |
| 661 | |
| 662 | return newpos; |
| 663 | } |
| 664 | |
David Spinadel | fb98be5 | 2014-05-04 12:51:10 +0300 | [diff] [blame] | 665 | static void |
Luciano Coelho | 65ff556 | 2015-03-20 13:35:47 +0200 | [diff] [blame] | 666 | iwl_mvm_build_scan_probe(struct iwl_mvm *mvm, struct ieee80211_vif *vif, |
| 667 | struct ieee80211_scan_ies *ies, |
Luciano Coelho | 45d1b12 | 2015-04-15 16:34:13 +0300 | [diff] [blame] | 668 | struct iwl_mvm_scan_params *params) |
David Spinadel | fb98be5 | 2014-05-04 12:51:10 +0300 | [diff] [blame] | 669 | { |
Luciano Coelho | 45d1b12 | 2015-04-15 16:34:13 +0300 | [diff] [blame] | 670 | struct ieee80211_mgmt *frame = (void *)params->preq.buf; |
Andrei Otcheretianski | 66dc527 | 2014-09-02 17:55:40 +0300 | [diff] [blame] | 671 | u8 *pos, *newpos; |
Luciano Coelho | 45d1b12 | 2015-04-15 16:34:13 +0300 | [diff] [blame] | 672 | const u8 *mac_addr = params->flags & NL80211_SCAN_FLAG_RANDOM_ADDR ? |
| 673 | params->mac_addr : NULL; |
David Spinadel | fb98be5 | 2014-05-04 12:51:10 +0300 | [diff] [blame] | 674 | |
Johannes Berg | effd05a | 2014-11-18 17:21:19 +0100 | [diff] [blame] | 675 | /* |
| 676 | * Unfortunately, right now the offload scan doesn't support randomising |
| 677 | * within the firmware, so until the firmware API is ready we implement |
| 678 | * it in the driver. This means that the scan iterations won't really be |
| 679 | * random, only when it's restarted, but at least that helps a bit. |
| 680 | */ |
| 681 | if (mac_addr) |
Luciano Coelho | 45d1b12 | 2015-04-15 16:34:13 +0300 | [diff] [blame] | 682 | get_random_mask_addr(frame->sa, mac_addr, |
| 683 | params->mac_addr_mask); |
Johannes Berg | effd05a | 2014-11-18 17:21:19 +0100 | [diff] [blame] | 684 | else |
| 685 | memcpy(frame->sa, vif->addr, ETH_ALEN); |
| 686 | |
David Spinadel | fb98be5 | 2014-05-04 12:51:10 +0300 | [diff] [blame] | 687 | frame->frame_control = cpu_to_le16(IEEE80211_STYPE_PROBE_REQ); |
| 688 | eth_broadcast_addr(frame->da); |
David Spinadel | fb98be5 | 2014-05-04 12:51:10 +0300 | [diff] [blame] | 689 | eth_broadcast_addr(frame->bssid); |
| 690 | frame->seq_ctrl = 0; |
| 691 | |
| 692 | pos = frame->u.probe_req.variable; |
| 693 | *pos++ = WLAN_EID_SSID; |
| 694 | *pos++ = 0; |
| 695 | |
Luciano Coelho | 45d1b12 | 2015-04-15 16:34:13 +0300 | [diff] [blame] | 696 | params->preq.mac_header.offset = 0; |
| 697 | params->preq.mac_header.len = cpu_to_le16(24 + 2); |
David Spinadel | fb98be5 | 2014-05-04 12:51:10 +0300 | [diff] [blame] | 698 | |
Andrei Otcheretianski | 66dc527 | 2014-09-02 17:55:40 +0300 | [diff] [blame] | 699 | /* Insert ds parameter set element on 2.4 GHz band */ |
| 700 | newpos = iwl_mvm_copy_and_insert_ds_elem(mvm, |
Johannes Berg | 57fbcce | 2016-04-12 15:56:15 +0200 | [diff] [blame] | 701 | ies->ies[NL80211_BAND_2GHZ], |
| 702 | ies->len[NL80211_BAND_2GHZ], |
Andrei Otcheretianski | 66dc527 | 2014-09-02 17:55:40 +0300 | [diff] [blame] | 703 | pos); |
Luciano Coelho | 45d1b12 | 2015-04-15 16:34:13 +0300 | [diff] [blame] | 704 | params->preq.band_data[0].offset = cpu_to_le16(pos - params->preq.buf); |
| 705 | params->preq.band_data[0].len = cpu_to_le16(newpos - pos); |
Andrei Otcheretianski | 66dc527 | 2014-09-02 17:55:40 +0300 | [diff] [blame] | 706 | pos = newpos; |
David Spinadel | fb98be5 | 2014-05-04 12:51:10 +0300 | [diff] [blame] | 707 | |
Johannes Berg | 57fbcce | 2016-04-12 15:56:15 +0200 | [diff] [blame] | 708 | memcpy(pos, ies->ies[NL80211_BAND_5GHZ], |
| 709 | ies->len[NL80211_BAND_5GHZ]); |
Luciano Coelho | 45d1b12 | 2015-04-15 16:34:13 +0300 | [diff] [blame] | 710 | params->preq.band_data[1].offset = cpu_to_le16(pos - params->preq.buf); |
| 711 | params->preq.band_data[1].len = |
Johannes Berg | 57fbcce | 2016-04-12 15:56:15 +0200 | [diff] [blame] | 712 | cpu_to_le16(ies->len[NL80211_BAND_5GHZ]); |
| 713 | pos += ies->len[NL80211_BAND_5GHZ]; |
David Spinadel | fb98be5 | 2014-05-04 12:51:10 +0300 | [diff] [blame] | 714 | |
| 715 | memcpy(pos, ies->common_ies, ies->common_ie_len); |
Luciano Coelho | 45d1b12 | 2015-04-15 16:34:13 +0300 | [diff] [blame] | 716 | params->preq.common_data.offset = cpu_to_le16(pos - params->preq.buf); |
| 717 | params->preq.common_data.len = cpu_to_le16(ies->common_ie_len); |
David Spinadel | fb98be5 | 2014-05-04 12:51:10 +0300 | [diff] [blame] | 718 | } |
| 719 | |
Avraham Stern | d7afbfc | 2015-05-12 12:19:48 +0300 | [diff] [blame] | 720 | static __le32 iwl_mvm_scan_priority(struct iwl_mvm *mvm, |
| 721 | enum iwl_scan_priority_ext prio) |
| 722 | { |
Johannes Berg | 859d914 | 2015-06-01 17:11:11 +0200 | [diff] [blame] | 723 | if (fw_has_api(&mvm->fw->ucode_capa, |
| 724 | IWL_UCODE_TLV_API_EXT_SCAN_PRIORITY)) |
Avraham Stern | d7afbfc | 2015-05-12 12:19:48 +0300 | [diff] [blame] | 725 | return cpu_to_le32(prio); |
| 726 | |
| 727 | if (prio <= IWL_SCAN_PRIORITY_EXT_2) |
| 728 | return cpu_to_le32(IWL_SCAN_PRIORITY_LOW); |
| 729 | |
| 730 | if (prio <= IWL_SCAN_PRIORITY_EXT_4) |
| 731 | return cpu_to_le32(IWL_SCAN_PRIORITY_MEDIUM); |
| 732 | |
| 733 | return cpu_to_le32(IWL_SCAN_PRIORITY_HIGH); |
| 734 | } |
| 735 | |
Luciano Coelho | 133c825 | 2015-04-20 15:29:03 +0300 | [diff] [blame] | 736 | static void iwl_mvm_scan_lmac_dwell(struct iwl_mvm *mvm, |
| 737 | struct iwl_scan_req_lmac *cmd, |
| 738 | struct iwl_mvm_scan_params *params) |
David Spinadel | fb98be5 | 2014-05-04 12:51:10 +0300 | [diff] [blame] | 739 | { |
David Spinadel | 9437e99 | 2015-06-22 13:20:00 +0300 | [diff] [blame] | 740 | cmd->active_dwell = scan_timing[params->type].dwell_active; |
| 741 | cmd->passive_dwell = scan_timing[params->type].dwell_passive; |
| 742 | cmd->fragmented_dwell = scan_timing[params->type].dwell_fragmented; |
David Spinadel | c3e230b | 2015-11-22 16:37:36 +0200 | [diff] [blame] | 743 | cmd->extended_dwell = scan_timing[params->type].dwell_extended; |
David Spinadel | 9437e99 | 2015-06-22 13:20:00 +0300 | [diff] [blame] | 744 | cmd->max_out_time = cpu_to_le32(scan_timing[params->type].max_out_time); |
| 745 | cmd->suspend_time = cpu_to_le32(scan_timing[params->type].suspend_time); |
Avraham Stern | d7afbfc | 2015-05-12 12:19:48 +0300 | [diff] [blame] | 746 | cmd->scan_prio = iwl_mvm_scan_priority(mvm, IWL_SCAN_PRIORITY_EXT_6); |
David Spinadel | fb98be5 | 2014-05-04 12:51:10 +0300 | [diff] [blame] | 747 | } |
| 748 | |
Luciano Coelho | 999d256 | 2015-03-27 10:28:26 +0300 | [diff] [blame] | 749 | static inline bool iwl_mvm_scan_fits(struct iwl_mvm *mvm, int n_ssids, |
| 750 | struct ieee80211_scan_ies *ies, |
| 751 | int n_channels) |
| 752 | { |
| 753 | return ((n_ssids <= PROBE_OPTION_MAX) && |
| 754 | (n_channels <= mvm->fw->ucode_capa.n_scan_channels) & |
| 755 | (ies->common_ie_len + |
| 756 | ies->len[NL80211_BAND_2GHZ] + |
| 757 | ies->len[NL80211_BAND_5GHZ] <= |
| 758 | iwl_mvm_max_scan_ie_fw_cmd_room(mvm))); |
| 759 | } |
| 760 | |
David Spinadel | 15286e2 | 2015-05-26 10:32:19 +0300 | [diff] [blame] | 761 | static inline bool iwl_mvm_scan_use_ebs(struct iwl_mvm *mvm, |
Avraham Stern | cd55cce | 2015-08-19 12:46:12 +0300 | [diff] [blame] | 762 | struct ieee80211_vif *vif) |
Luciano Coelho | 7d7de1e | 2015-04-17 09:53:55 +0300 | [diff] [blame] | 763 | { |
| 764 | const struct iwl_ucode_capabilities *capa = &mvm->fw->ucode_capa; |
| 765 | |
| 766 | /* We can only use EBS if: |
| 767 | * 1. the feature is supported; |
| 768 | * 2. the last EBS was successful; |
David Spinadel | 15286e2 | 2015-05-26 10:32:19 +0300 | [diff] [blame] | 769 | * 3. if only single scan, the single scan EBS API is supported; |
| 770 | * 4. it's not a p2p find operation. |
Luciano Coelho | 7d7de1e | 2015-04-17 09:53:55 +0300 | [diff] [blame] | 771 | */ |
| 772 | return ((capa->flags & IWL_UCODE_TLV_FLAGS_EBS_SUPPORT) && |
| 773 | mvm->last_ebs_successful && |
David Spinadel | 15286e2 | 2015-05-26 10:32:19 +0300 | [diff] [blame] | 774 | vif->type != NL80211_IFTYPE_P2P_DEVICE); |
Luciano Coelho | 7d7de1e | 2015-04-17 09:53:55 +0300 | [diff] [blame] | 775 | } |
| 776 | |
David Spinadel | c3e230b | 2015-11-22 16:37:36 +0200 | [diff] [blame] | 777 | static inline bool iwl_mvm_is_regular_scan(struct iwl_mvm_scan_params *params) |
| 778 | { |
| 779 | return params->n_scan_plans == 1 && |
| 780 | params->scan_plans[0].iterations == 1; |
| 781 | } |
| 782 | |
Luciano Coelho | 8751540 | 2015-04-20 14:47:49 +0300 | [diff] [blame] | 783 | static int iwl_mvm_scan_lmac_flags(struct iwl_mvm *mvm, |
David Spinadel | c3e230b | 2015-11-22 16:37:36 +0200 | [diff] [blame] | 784 | struct iwl_mvm_scan_params *params, |
| 785 | struct ieee80211_vif *vif) |
Luciano Coelho | 8751540 | 2015-04-20 14:47:49 +0300 | [diff] [blame] | 786 | { |
| 787 | int flags = 0; |
| 788 | |
| 789 | if (params->n_ssids == 0) |
| 790 | flags |= IWL_MVM_LMAC_SCAN_FLAG_PASSIVE; |
| 791 | |
| 792 | if (params->n_ssids == 1 && params->ssids[0].ssid_len != 0) |
| 793 | flags |= IWL_MVM_LMAC_SCAN_FLAG_PRE_CONNECTION; |
| 794 | |
David Spinadel | 9437e99 | 2015-06-22 13:20:00 +0300 | [diff] [blame] | 795 | if (params->type == IWL_SCAN_TYPE_FRAGMENTED) |
Luciano Coelho | 8751540 | 2015-04-20 14:47:49 +0300 | [diff] [blame] | 796 | flags |= IWL_MVM_LMAC_SCAN_FLAG_FRAGMENTED; |
| 797 | |
| 798 | if (iwl_mvm_rrm_scan_needed(mvm)) |
| 799 | flags |= IWL_MVM_LMAC_SCAN_FLAGS_RRM_ENABLED; |
| 800 | |
| 801 | if (params->pass_all) |
| 802 | flags |= IWL_MVM_LMAC_SCAN_FLAG_PASS_ALL; |
| 803 | else |
| 804 | flags |= IWL_MVM_LMAC_SCAN_FLAG_MATCH; |
| 805 | |
| 806 | #ifdef CONFIG_IWLWIFI_DEBUGFS |
| 807 | if (mvm->scan_iter_notif_enabled) |
| 808 | flags |= IWL_MVM_LMAC_SCAN_FLAG_ITER_COMPLETE; |
| 809 | #endif |
| 810 | |
Luca Coelho | a339e91 | 2016-02-02 22:58:46 +0200 | [diff] [blame] | 811 | if (mvm->sched_scan_pass_all == SCHED_SCAN_PASS_ALL_ENABLED) |
| 812 | flags |= IWL_MVM_LMAC_SCAN_FLAG_ITER_COMPLETE; |
| 813 | |
David Spinadel | c3e230b | 2015-11-22 16:37:36 +0200 | [diff] [blame] | 814 | if (iwl_mvm_is_regular_scan(params) && |
David Spinadel | ca95ff3 | 2016-01-03 17:08:32 +0200 | [diff] [blame] | 815 | vif->type != NL80211_IFTYPE_P2P_DEVICE && |
| 816 | params->type != IWL_SCAN_TYPE_FRAGMENTED) |
David Spinadel | c3e230b | 2015-11-22 16:37:36 +0200 | [diff] [blame] | 817 | flags |= IWL_MVM_LMAC_SCAN_FLAG_EXTENDED_DWELL; |
| 818 | |
Luciano Coelho | 8751540 | 2015-04-20 14:47:49 +0300 | [diff] [blame] | 819 | return flags; |
| 820 | } |
| 821 | |
Luciano Coelho | 6749dd8 | 2015-03-20 15:51:36 +0200 | [diff] [blame] | 822 | static int iwl_mvm_scan_lmac(struct iwl_mvm *mvm, struct ieee80211_vif *vif, |
Luciano Coelho | 3db7c6e | 2015-04-01 17:09:56 +0300 | [diff] [blame] | 823 | struct iwl_mvm_scan_params *params) |
David Spinadel | fb98be5 | 2014-05-04 12:51:10 +0300 | [diff] [blame] | 824 | { |
Luciano Coelho | 65ff556 | 2015-03-20 13:35:47 +0200 | [diff] [blame] | 825 | struct iwl_scan_req_lmac *cmd = mvm->scan_cmd; |
Luciano Coelho | 45d1b12 | 2015-04-15 16:34:13 +0300 | [diff] [blame] | 826 | struct iwl_scan_probe_req *preq = |
| 827 | (void *)(cmd->data + sizeof(struct iwl_scan_channel_cfg_lmac) * |
| 828 | mvm->fw->ucode_capa.n_scan_channels); |
Luciano Coelho | 8751540 | 2015-04-20 14:47:49 +0300 | [diff] [blame] | 829 | u32 ssid_bitmap = 0; |
Avraham Stern | cd55cce | 2015-08-19 12:46:12 +0300 | [diff] [blame] | 830 | int i; |
David Spinadel | fb98be5 | 2014-05-04 12:51:10 +0300 | [diff] [blame] | 831 | |
| 832 | lockdep_assert_held(&mvm->mutex); |
| 833 | |
Luciano Coelho | 133c825 | 2015-04-20 15:29:03 +0300 | [diff] [blame] | 834 | memset(cmd, 0, ksize(cmd)); |
David Spinadel | fb98be5 | 2014-05-04 12:51:10 +0300 | [diff] [blame] | 835 | |
Avraham Stern | cd55cce | 2015-08-19 12:46:12 +0300 | [diff] [blame] | 836 | if (WARN_ON(params->n_scan_plans > IWL_MAX_SCHED_SCAN_PLANS)) |
| 837 | return -EINVAL; |
| 838 | |
Luciano Coelho | 133c825 | 2015-04-20 15:29:03 +0300 | [diff] [blame] | 839 | iwl_mvm_scan_lmac_dwell(mvm, cmd, params); |
| 840 | |
| 841 | cmd->rx_chain_select = iwl_mvm_scan_rx_chain(mvm); |
| 842 | cmd->iter_num = cpu_to_le32(1); |
Luciano Coelho | f7b788b | 2015-04-02 00:08:35 +0300 | [diff] [blame] | 843 | cmd->n_channels = (u8)params->n_channels; |
David Spinadel | fb98be5 | 2014-05-04 12:51:10 +0300 | [diff] [blame] | 844 | |
Luciano Coelho | f7b788b | 2015-04-02 00:08:35 +0300 | [diff] [blame] | 845 | cmd->delay = cpu_to_le32(params->delay); |
Luciano Coelho | 2250fd9 | 2014-12-03 10:52:26 +0200 | [diff] [blame] | 846 | |
David Spinadel | c3e230b | 2015-11-22 16:37:36 +0200 | [diff] [blame] | 847 | cmd->scan_flags = cpu_to_le32(iwl_mvm_scan_lmac_flags(mvm, params, |
| 848 | vif)); |
David Spinadel | fb98be5 | 2014-05-04 12:51:10 +0300 | [diff] [blame] | 849 | |
Luciano Coelho | f7b788b | 2015-04-02 00:08:35 +0300 | [diff] [blame] | 850 | cmd->flags = iwl_mvm_scan_rxon_flags(params->channels[0]->band); |
David Spinadel | fb98be5 | 2014-05-04 12:51:10 +0300 | [diff] [blame] | 851 | cmd->filter_flags = cpu_to_le32(MAC_FILTER_ACCEPT_GRP | |
| 852 | MAC_FILTER_IN_BEACON); |
Luciano Coelho | f7b788b | 2015-04-02 00:08:35 +0300 | [diff] [blame] | 853 | iwl_mvm_scan_fill_tx_cmd(mvm, cmd->tx_cmd, params->no_cck); |
Luciano Coelho | e2ec4f6 | 2015-04-02 17:49:04 +0300 | [diff] [blame] | 854 | iwl_scan_build_ssids(params, cmd->direct_scan, &ssid_bitmap); |
| 855 | |
| 856 | /* this API uses bits 1-20 instead of 0-19 */ |
| 857 | ssid_bitmap <<= 1; |
Luciano Coelho | f7b788b | 2015-04-02 00:08:35 +0300 | [diff] [blame] | 858 | |
Avraham Stern | cd55cce | 2015-08-19 12:46:12 +0300 | [diff] [blame] | 859 | for (i = 0; i < params->n_scan_plans; i++) { |
Avraham Stern | cd55cce | 2015-08-19 12:46:12 +0300 | [diff] [blame] | 860 | struct cfg80211_sched_scan_plan *scan_plan = |
| 861 | ¶ms->scan_plans[i]; |
David Spinadel | fb98be5 | 2014-05-04 12:51:10 +0300 | [diff] [blame] | 862 | |
Avraham Stern | cd55cce | 2015-08-19 12:46:12 +0300 | [diff] [blame] | 863 | cmd->schedule[i].delay = |
| 864 | cpu_to_le16(scan_plan->interval); |
| 865 | cmd->schedule[i].iterations = scan_plan->iterations; |
| 866 | cmd->schedule[i].full_scan_mul = 1; |
| 867 | } |
| 868 | |
| 869 | /* |
| 870 | * If the number of iterations of the last scan plan is set to |
| 871 | * zero, it should run infinitely. However, this is not always the case. |
| 872 | * For example, when regular scan is requested the driver sets one scan |
| 873 | * plan with one iteration. |
| 874 | */ |
| 875 | if (!cmd->schedule[i - 1].iterations) |
Johannes Berg | 46eebec | 2015-09-11 12:09:22 +0200 | [diff] [blame] | 876 | cmd->schedule[i - 1].iterations = 0xff; |
Avraham Stern | cd55cce | 2015-08-19 12:46:12 +0300 | [diff] [blame] | 877 | |
| 878 | if (iwl_mvm_scan_use_ebs(mvm, vif)) { |
David Spinadel | 1f9c418 | 2014-12-01 23:30:07 +0200 | [diff] [blame] | 879 | cmd->channel_opt[0].flags = |
| 880 | cpu_to_le16(IWL_SCAN_CHANNEL_FLAG_EBS | |
| 881 | IWL_SCAN_CHANNEL_FLAG_EBS_ACCURATE | |
| 882 | IWL_SCAN_CHANNEL_FLAG_CACHE_ADD); |
| 883 | cmd->channel_opt[0].non_ebs_ratio = |
| 884 | cpu_to_le16(IWL_DENSE_EBS_SCAN_RATIO); |
| 885 | cmd->channel_opt[1].flags = |
| 886 | cpu_to_le16(IWL_SCAN_CHANNEL_FLAG_EBS | |
| 887 | IWL_SCAN_CHANNEL_FLAG_EBS_ACCURATE | |
| 888 | IWL_SCAN_CHANNEL_FLAG_CACHE_ADD); |
| 889 | cmd->channel_opt[1].non_ebs_ratio = |
| 890 | cpu_to_le16(IWL_SPARSE_EBS_SCAN_RATIO); |
| 891 | } |
| 892 | |
Luciano Coelho | f7b788b | 2015-04-02 00:08:35 +0300 | [diff] [blame] | 893 | iwl_mvm_lmac_scan_cfg_channels(mvm, params->channels, |
| 894 | params->n_channels, ssid_bitmap, cmd); |
David Spinadel | fb98be5 | 2014-05-04 12:51:10 +0300 | [diff] [blame] | 895 | |
Luciano Coelho | 45d1b12 | 2015-04-15 16:34:13 +0300 | [diff] [blame] | 896 | *preq = params->preq; |
David Spinadel | fb98be5 | 2014-05-04 12:51:10 +0300 | [diff] [blame] | 897 | |
Luciano Coelho | 8df3e68 | 2015-04-01 17:37:44 +0300 | [diff] [blame] | 898 | return 0; |
David Spinadel | fb98be5 | 2014-05-04 12:51:10 +0300 | [diff] [blame] | 899 | } |
| 900 | |
David Spinadel | d249622 | 2014-05-20 12:46:37 +0300 | [diff] [blame] | 901 | static int rate_to_scan_rate_flag(unsigned int rate) |
| 902 | { |
| 903 | static const int rate_to_scan_rate[IWL_RATE_COUNT] = { |
| 904 | [IWL_RATE_1M_INDEX] = SCAN_CONFIG_RATE_1M, |
| 905 | [IWL_RATE_2M_INDEX] = SCAN_CONFIG_RATE_2M, |
| 906 | [IWL_RATE_5M_INDEX] = SCAN_CONFIG_RATE_5M, |
| 907 | [IWL_RATE_11M_INDEX] = SCAN_CONFIG_RATE_11M, |
| 908 | [IWL_RATE_6M_INDEX] = SCAN_CONFIG_RATE_6M, |
| 909 | [IWL_RATE_9M_INDEX] = SCAN_CONFIG_RATE_9M, |
| 910 | [IWL_RATE_12M_INDEX] = SCAN_CONFIG_RATE_12M, |
| 911 | [IWL_RATE_18M_INDEX] = SCAN_CONFIG_RATE_18M, |
| 912 | [IWL_RATE_24M_INDEX] = SCAN_CONFIG_RATE_24M, |
| 913 | [IWL_RATE_36M_INDEX] = SCAN_CONFIG_RATE_36M, |
| 914 | [IWL_RATE_48M_INDEX] = SCAN_CONFIG_RATE_48M, |
| 915 | [IWL_RATE_54M_INDEX] = SCAN_CONFIG_RATE_54M, |
| 916 | }; |
| 917 | |
| 918 | return rate_to_scan_rate[rate]; |
| 919 | } |
| 920 | |
| 921 | static __le32 iwl_mvm_scan_config_rates(struct iwl_mvm *mvm) |
| 922 | { |
| 923 | struct ieee80211_supported_band *band; |
| 924 | unsigned int rates = 0; |
| 925 | int i; |
| 926 | |
Johannes Berg | 57fbcce | 2016-04-12 15:56:15 +0200 | [diff] [blame] | 927 | band = &mvm->nvm_data->bands[NL80211_BAND_2GHZ]; |
David Spinadel | d249622 | 2014-05-20 12:46:37 +0300 | [diff] [blame] | 928 | for (i = 0; i < band->n_bitrates; i++) |
| 929 | rates |= rate_to_scan_rate_flag(band->bitrates[i].hw_value); |
Johannes Berg | 57fbcce | 2016-04-12 15:56:15 +0200 | [diff] [blame] | 930 | band = &mvm->nvm_data->bands[NL80211_BAND_5GHZ]; |
David Spinadel | d249622 | 2014-05-20 12:46:37 +0300 | [diff] [blame] | 931 | for (i = 0; i < band->n_bitrates; i++) |
| 932 | rates |= rate_to_scan_rate_flag(band->bitrates[i].hw_value); |
| 933 | |
| 934 | /* Set both basic rates and supported rates */ |
| 935 | rates |= SCAN_CONFIG_SUPPORTED_RATE(rates); |
| 936 | |
| 937 | return cpu_to_le32(rates); |
| 938 | } |
| 939 | |
| 940 | int iwl_mvm_config_scan(struct iwl_mvm *mvm) |
| 941 | { |
David Spinadel | d249622 | 2014-05-20 12:46:37 +0300 | [diff] [blame] | 942 | struct iwl_scan_config *scan_config; |
| 943 | struct ieee80211_supported_band *band; |
| 944 | int num_channels = |
Johannes Berg | 57fbcce | 2016-04-12 15:56:15 +0200 | [diff] [blame] | 945 | mvm->nvm_data->bands[NL80211_BAND_2GHZ].n_channels + |
| 946 | mvm->nvm_data->bands[NL80211_BAND_5GHZ].n_channels; |
Johannes Berg | 88742c9 | 2015-06-30 15:31:22 +0200 | [diff] [blame] | 947 | int ret, i, j = 0, cmd_size; |
David Spinadel | d249622 | 2014-05-20 12:46:37 +0300 | [diff] [blame] | 948 | struct iwl_host_cmd cmd = { |
Johannes Berg | 88742c9 | 2015-06-30 15:31:22 +0200 | [diff] [blame] | 949 | .id = iwl_cmd_id(SCAN_CFG_CMD, IWL_ALWAYS_LONG_GROUP, 0), |
David Spinadel | d249622 | 2014-05-20 12:46:37 +0300 | [diff] [blame] | 950 | }; |
Avraham Stern | 355346b | 2015-11-26 11:22:33 +0200 | [diff] [blame] | 951 | enum iwl_mvm_scan_type type = iwl_mvm_get_scan_type(mvm, false); |
David Spinadel | d249622 | 2014-05-20 12:46:37 +0300 | [diff] [blame] | 952 | |
| 953 | if (WARN_ON(num_channels > mvm->fw->ucode_capa.n_scan_channels)) |
| 954 | return -ENOBUFS; |
| 955 | |
Max Stepanov | 1c4e15a | 2016-01-04 11:09:14 +0200 | [diff] [blame] | 956 | if (type == mvm->scan_type) { |
| 957 | IWL_DEBUG_SCAN(mvm, |
| 958 | "Ignoring UMAC scan config of the same type\n"); |
Avraham Stern | 355346b | 2015-11-26 11:22:33 +0200 | [diff] [blame] | 959 | return 0; |
Max Stepanov | 1c4e15a | 2016-01-04 11:09:14 +0200 | [diff] [blame] | 960 | } |
Avraham Stern | 355346b | 2015-11-26 11:22:33 +0200 | [diff] [blame] | 961 | |
David Spinadel | d249622 | 2014-05-20 12:46:37 +0300 | [diff] [blame] | 962 | cmd_size = sizeof(*scan_config) + mvm->fw->ucode_capa.n_scan_channels; |
| 963 | |
| 964 | scan_config = kzalloc(cmd_size, GFP_KERNEL); |
| 965 | if (!scan_config) |
| 966 | return -ENOMEM; |
| 967 | |
David Spinadel | d249622 | 2014-05-20 12:46:37 +0300 | [diff] [blame] | 968 | scan_config->flags = cpu_to_le32(SCAN_CONFIG_FLAG_ACTIVATE | |
| 969 | SCAN_CONFIG_FLAG_ALLOW_CHUB_REQS | |
| 970 | SCAN_CONFIG_FLAG_SET_TX_CHAINS | |
| 971 | SCAN_CONFIG_FLAG_SET_RX_CHAINS | |
David Spinadel | 5db81fd | 2016-03-20 10:35:10 +0200 | [diff] [blame] | 972 | SCAN_CONFIG_FLAG_SET_AUX_STA_ID | |
David Spinadel | d249622 | 2014-05-20 12:46:37 +0300 | [diff] [blame] | 973 | SCAN_CONFIG_FLAG_SET_ALL_TIMES | |
| 974 | SCAN_CONFIG_FLAG_SET_LEGACY_RATES | |
| 975 | SCAN_CONFIG_FLAG_SET_MAC_ADDR | |
| 976 | SCAN_CONFIG_FLAG_SET_CHANNEL_FLAGS| |
Avraham Stern | f9d7164 | 2015-11-10 14:56:24 +0200 | [diff] [blame] | 977 | SCAN_CONFIG_N_CHANNELS(num_channels) | |
Avraham Stern | 355346b | 2015-11-26 11:22:33 +0200 | [diff] [blame] | 978 | (type == IWL_SCAN_TYPE_FRAGMENTED ? |
Avraham Stern | f9d7164 | 2015-11-10 14:56:24 +0200 | [diff] [blame] | 979 | SCAN_CONFIG_FLAG_SET_FRAGMENTED : |
| 980 | SCAN_CONFIG_FLAG_CLEAR_FRAGMENTED)); |
Moshe Harel | a054427 | 2014-12-08 21:13:14 +0200 | [diff] [blame] | 981 | scan_config->tx_chains = cpu_to_le32(iwl_mvm_get_valid_tx_ant(mvm)); |
David Spinadel | d249622 | 2014-05-20 12:46:37 +0300 | [diff] [blame] | 982 | scan_config->rx_chains = cpu_to_le32(iwl_mvm_scan_rx_ant(mvm)); |
| 983 | scan_config->legacy_rates = iwl_mvm_scan_config_rates(mvm); |
Avraham Stern | 355346b | 2015-11-26 11:22:33 +0200 | [diff] [blame] | 984 | scan_config->out_of_channel_time = |
| 985 | cpu_to_le32(scan_timing[type].max_out_time); |
| 986 | scan_config->suspend_time = cpu_to_le32(scan_timing[type].suspend_time); |
| 987 | scan_config->dwell_active = scan_timing[type].dwell_active; |
| 988 | scan_config->dwell_passive = scan_timing[type].dwell_passive; |
| 989 | scan_config->dwell_fragmented = scan_timing[type].dwell_fragmented; |
David Spinadel | c3e230b | 2015-11-22 16:37:36 +0200 | [diff] [blame] | 990 | scan_config->dwell_extended = scan_timing[type].dwell_extended; |
David Spinadel | d249622 | 2014-05-20 12:46:37 +0300 | [diff] [blame] | 991 | |
| 992 | memcpy(&scan_config->mac_addr, &mvm->addresses[0].addr, ETH_ALEN); |
| 993 | |
| 994 | scan_config->bcast_sta_id = mvm->aux_sta.sta_id; |
| 995 | scan_config->channel_flags = IWL_CHANNEL_FLAG_EBS | |
| 996 | IWL_CHANNEL_FLAG_ACCURATE_EBS | |
| 997 | IWL_CHANNEL_FLAG_EBS_ADD | |
| 998 | IWL_CHANNEL_FLAG_PRE_SCAN_PASSIVE2ACTIVE; |
| 999 | |
Johannes Berg | 57fbcce | 2016-04-12 15:56:15 +0200 | [diff] [blame] | 1000 | band = &mvm->nvm_data->bands[NL80211_BAND_2GHZ]; |
David Spinadel | d249622 | 2014-05-20 12:46:37 +0300 | [diff] [blame] | 1001 | for (i = 0; i < band->n_channels; i++, j++) |
Ilan Peer | a25d40e | 2015-01-23 21:13:01 +0200 | [diff] [blame] | 1002 | scan_config->channel_array[j] = band->channels[i].hw_value; |
Johannes Berg | 57fbcce | 2016-04-12 15:56:15 +0200 | [diff] [blame] | 1003 | band = &mvm->nvm_data->bands[NL80211_BAND_5GHZ]; |
David Spinadel | d249622 | 2014-05-20 12:46:37 +0300 | [diff] [blame] | 1004 | for (i = 0; i < band->n_channels; i++, j++) |
Ilan Peer | a25d40e | 2015-01-23 21:13:01 +0200 | [diff] [blame] | 1005 | scan_config->channel_array[j] = band->channels[i].hw_value; |
David Spinadel | d249622 | 2014-05-20 12:46:37 +0300 | [diff] [blame] | 1006 | |
| 1007 | cmd.data[0] = scan_config; |
| 1008 | cmd.len[0] = cmd_size; |
| 1009 | cmd.dataflags[0] = IWL_HCMD_DFL_NOCOPY; |
| 1010 | |
| 1011 | IWL_DEBUG_SCAN(mvm, "Sending UMAC scan config\n"); |
| 1012 | |
| 1013 | ret = iwl_mvm_send_cmd(mvm, &cmd); |
Avraham Stern | 355346b | 2015-11-26 11:22:33 +0200 | [diff] [blame] | 1014 | if (!ret) |
| 1015 | mvm->scan_type = type; |
David Spinadel | d249622 | 2014-05-20 12:46:37 +0300 | [diff] [blame] | 1016 | |
| 1017 | kfree(scan_config); |
| 1018 | return ret; |
| 1019 | } |
| 1020 | |
Luciano Coelho | 6185af2a | 2015-05-07 11:13:24 +0300 | [diff] [blame] | 1021 | static int iwl_mvm_scan_uid_by_status(struct iwl_mvm *mvm, int status) |
David Spinadel | d249622 | 2014-05-20 12:46:37 +0300 | [diff] [blame] | 1022 | { |
| 1023 | int i; |
| 1024 | |
Luciano Coelho | 507e4cd | 2015-03-19 22:58:33 +0200 | [diff] [blame] | 1025 | for (i = 0; i < mvm->max_scans; i++) |
Luciano Coelho | 6185af2a | 2015-05-07 11:13:24 +0300 | [diff] [blame] | 1026 | if (mvm->scan_uid_status[i] == status) |
David Spinadel | d249622 | 2014-05-20 12:46:37 +0300 | [diff] [blame] | 1027 | return i; |
| 1028 | |
Luciano Coelho | 6185af2a | 2015-05-07 11:13:24 +0300 | [diff] [blame] | 1029 | return -ENOENT; |
David Spinadel | d249622 | 2014-05-20 12:46:37 +0300 | [diff] [blame] | 1030 | } |
| 1031 | |
Luciano Coelho | 133c825 | 2015-04-20 15:29:03 +0300 | [diff] [blame] | 1032 | static void iwl_mvm_scan_umac_dwell(struct iwl_mvm *mvm, |
David Spinadel | d249622 | 2014-05-20 12:46:37 +0300 | [diff] [blame] | 1033 | struct iwl_scan_req_umac *cmd, |
| 1034 | struct iwl_mvm_scan_params *params) |
| 1035 | { |
David Spinadel | c3e230b | 2015-11-22 16:37:36 +0200 | [diff] [blame] | 1036 | cmd->extended_dwell = scan_timing[params->type].dwell_extended; |
David Spinadel | 9437e99 | 2015-06-22 13:20:00 +0300 | [diff] [blame] | 1037 | cmd->active_dwell = scan_timing[params->type].dwell_active; |
| 1038 | cmd->passive_dwell = scan_timing[params->type].dwell_passive; |
| 1039 | cmd->fragmented_dwell = scan_timing[params->type].dwell_fragmented; |
| 1040 | cmd->max_out_time = cpu_to_le32(scan_timing[params->type].max_out_time); |
| 1041 | cmd->suspend_time = cpu_to_le32(scan_timing[params->type].suspend_time); |
Avraham Stern | d7afbfc | 2015-05-12 12:19:48 +0300 | [diff] [blame] | 1042 | cmd->scan_priority = |
| 1043 | iwl_mvm_scan_priority(mvm, IWL_SCAN_PRIORITY_EXT_6); |
Luciano Coelho | 133c825 | 2015-04-20 15:29:03 +0300 | [diff] [blame] | 1044 | |
Avraham Stern | cd55cce | 2015-08-19 12:46:12 +0300 | [diff] [blame] | 1045 | if (iwl_mvm_is_regular_scan(params)) |
Avraham Stern | d7afbfc | 2015-05-12 12:19:48 +0300 | [diff] [blame] | 1046 | cmd->ooc_priority = |
| 1047 | iwl_mvm_scan_priority(mvm, IWL_SCAN_PRIORITY_EXT_6); |
Luciano Coelho | 133c825 | 2015-04-20 15:29:03 +0300 | [diff] [blame] | 1048 | else |
Avraham Stern | d7afbfc | 2015-05-12 12:19:48 +0300 | [diff] [blame] | 1049 | cmd->ooc_priority = |
| 1050 | iwl_mvm_scan_priority(mvm, IWL_SCAN_PRIORITY_EXT_2); |
David Spinadel | d249622 | 2014-05-20 12:46:37 +0300 | [diff] [blame] | 1051 | } |
| 1052 | |
| 1053 | static void |
| 1054 | iwl_mvm_umac_scan_cfg_channels(struct iwl_mvm *mvm, |
| 1055 | struct ieee80211_channel **channels, |
| 1056 | int n_channels, u32 ssid_bitmap, |
| 1057 | struct iwl_scan_req_umac *cmd) |
| 1058 | { |
| 1059 | struct iwl_scan_channel_cfg_umac *channel_cfg = (void *)&cmd->data; |
| 1060 | int i; |
| 1061 | |
| 1062 | for (i = 0; i < n_channels; i++) { |
| 1063 | channel_cfg[i].flags = cpu_to_le32(ssid_bitmap); |
| 1064 | channel_cfg[i].channel_num = channels[i]->hw_value; |
| 1065 | channel_cfg[i].iter_count = 1; |
| 1066 | channel_cfg[i].iter_interval = 0; |
| 1067 | } |
| 1068 | } |
| 1069 | |
Luciano Coelho | 6f4dcc7 | 2015-04-20 14:37:16 +0300 | [diff] [blame] | 1070 | static u32 iwl_mvm_scan_umac_flags(struct iwl_mvm *mvm, |
David Spinadel | c3e230b | 2015-11-22 16:37:36 +0200 | [diff] [blame] | 1071 | struct iwl_mvm_scan_params *params, |
| 1072 | struct ieee80211_vif *vif) |
David Spinadel | d249622 | 2014-05-20 12:46:37 +0300 | [diff] [blame] | 1073 | { |
| 1074 | int flags = 0; |
| 1075 | |
Luciano Coelho | 6f4dcc7 | 2015-04-20 14:37:16 +0300 | [diff] [blame] | 1076 | if (params->n_ssids == 0) |
David Spinadel | d249622 | 2014-05-20 12:46:37 +0300 | [diff] [blame] | 1077 | flags = IWL_UMAC_SCAN_GEN_FLAGS_PASSIVE; |
| 1078 | |
Luciano Coelho | 6f4dcc7 | 2015-04-20 14:37:16 +0300 | [diff] [blame] | 1079 | if (params->n_ssids == 1 && params->ssids[0].ssid_len != 0) |
David Spinadel | d249622 | 2014-05-20 12:46:37 +0300 | [diff] [blame] | 1080 | flags |= IWL_UMAC_SCAN_GEN_FLAGS_PRE_CONNECT; |
| 1081 | |
David Spinadel | 9437e99 | 2015-06-22 13:20:00 +0300 | [diff] [blame] | 1082 | if (params->type == IWL_SCAN_TYPE_FRAGMENTED) |
David Spinadel | d249622 | 2014-05-20 12:46:37 +0300 | [diff] [blame] | 1083 | flags |= IWL_UMAC_SCAN_GEN_FLAGS_FRAGMENTED; |
| 1084 | |
| 1085 | if (iwl_mvm_rrm_scan_needed(mvm)) |
| 1086 | flags |= IWL_UMAC_SCAN_GEN_FLAGS_RRM_ENABLED; |
| 1087 | |
Luciano Coelho | 6f4dcc7 | 2015-04-20 14:37:16 +0300 | [diff] [blame] | 1088 | if (params->pass_all) |
| 1089 | flags |= IWL_UMAC_SCAN_GEN_FLAGS_PASS_ALL; |
| 1090 | else |
| 1091 | flags |= IWL_UMAC_SCAN_GEN_FLAGS_MATCH; |
| 1092 | |
Avraham Stern | cd55cce | 2015-08-19 12:46:12 +0300 | [diff] [blame] | 1093 | if (!iwl_mvm_is_regular_scan(params)) |
Luciano Coelho | 6f4dcc7 | 2015-04-20 14:37:16 +0300 | [diff] [blame] | 1094 | flags |= IWL_UMAC_SCAN_GEN_FLAGS_PERIODIC; |
| 1095 | |
Avraham Stern | ee9219b | 2015-03-23 15:09:27 +0200 | [diff] [blame] | 1096 | #ifdef CONFIG_IWLWIFI_DEBUGFS |
| 1097 | if (mvm->scan_iter_notif_enabled) |
| 1098 | flags |= IWL_UMAC_SCAN_GEN_FLAGS_ITER_COMPLETE; |
| 1099 | #endif |
David Spinadel | c3e230b | 2015-11-22 16:37:36 +0200 | [diff] [blame] | 1100 | |
Luca Coelho | a339e91 | 2016-02-02 22:58:46 +0200 | [diff] [blame] | 1101 | if (mvm->sched_scan_pass_all == SCHED_SCAN_PASS_ALL_ENABLED) |
| 1102 | flags |= IWL_UMAC_SCAN_GEN_FLAGS_ITER_COMPLETE; |
| 1103 | |
David Spinadel | c3e230b | 2015-11-22 16:37:36 +0200 | [diff] [blame] | 1104 | if (iwl_mvm_is_regular_scan(params) && |
David Spinadel | ca95ff3 | 2016-01-03 17:08:32 +0200 | [diff] [blame] | 1105 | vif->type != NL80211_IFTYPE_P2P_DEVICE && |
| 1106 | params->type != IWL_SCAN_TYPE_FRAGMENTED) |
David Spinadel | c3e230b | 2015-11-22 16:37:36 +0200 | [diff] [blame] | 1107 | flags |= IWL_UMAC_SCAN_GEN_FLAGS_EXTENDED_DWELL; |
| 1108 | |
David Spinadel | d249622 | 2014-05-20 12:46:37 +0300 | [diff] [blame] | 1109 | return flags; |
| 1110 | } |
| 1111 | |
Luciano Coelho | 6749dd8 | 2015-03-20 15:51:36 +0200 | [diff] [blame] | 1112 | static int iwl_mvm_scan_umac(struct iwl_mvm *mvm, struct ieee80211_vif *vif, |
Luciano Coelho | 6185af2a | 2015-05-07 11:13:24 +0300 | [diff] [blame] | 1113 | struct iwl_mvm_scan_params *params, |
| 1114 | int type) |
David Spinadel | d249622 | 2014-05-20 12:46:37 +0300 | [diff] [blame] | 1115 | { |
David Spinadel | d249622 | 2014-05-20 12:46:37 +0300 | [diff] [blame] | 1116 | struct iwl_scan_req_umac *cmd = mvm->scan_cmd; |
| 1117 | struct iwl_scan_req_umac_tail *sec_part = (void *)&cmd->data + |
| 1118 | sizeof(struct iwl_scan_channel_cfg_umac) * |
| 1119 | mvm->fw->ucode_capa.n_scan_channels; |
Avraham Stern | cd55cce | 2015-08-19 12:46:12 +0300 | [diff] [blame] | 1120 | int uid, i; |
Johannes Berg | c8660dd | 2014-11-17 15:06:52 +0100 | [diff] [blame] | 1121 | u32 ssid_bitmap = 0; |
David Spinadel | d249622 | 2014-05-20 12:46:37 +0300 | [diff] [blame] | 1122 | |
| 1123 | lockdep_assert_held(&mvm->mutex); |
| 1124 | |
Avraham Stern | cd55cce | 2015-08-19 12:46:12 +0300 | [diff] [blame] | 1125 | if (WARN_ON(params->n_scan_plans > IWL_MAX_SCHED_SCAN_PLANS)) |
| 1126 | return -EINVAL; |
| 1127 | |
Luciano Coelho | 6185af2a | 2015-05-07 11:13:24 +0300 | [diff] [blame] | 1128 | uid = iwl_mvm_scan_uid_by_status(mvm, 0); |
| 1129 | if (uid < 0) |
| 1130 | return uid; |
David Spinadel | d249622 | 2014-05-20 12:46:37 +0300 | [diff] [blame] | 1131 | |
Luciano Coelho | 133c825 | 2015-04-20 15:29:03 +0300 | [diff] [blame] | 1132 | memset(cmd, 0, ksize(cmd)); |
David Spinadel | d249622 | 2014-05-20 12:46:37 +0300 | [diff] [blame] | 1133 | |
Luciano Coelho | 133c825 | 2015-04-20 15:29:03 +0300 | [diff] [blame] | 1134 | iwl_mvm_scan_umac_dwell(mvm, cmd, params); |
| 1135 | |
Luciano Coelho | 6185af2a | 2015-05-07 11:13:24 +0300 | [diff] [blame] | 1136 | mvm->scan_uid_status[uid] = type; |
Luciano Coelho | 8423cdc | 2015-04-17 14:49:58 +0300 | [diff] [blame] | 1137 | |
Luciano Coelho | 8423cdc | 2015-04-17 14:49:58 +0300 | [diff] [blame] | 1138 | cmd->uid = cpu_to_le32(uid); |
David Spinadel | c3e230b | 2015-11-22 16:37:36 +0200 | [diff] [blame] | 1139 | cmd->general_flags = cpu_to_le32(iwl_mvm_scan_umac_flags(mvm, params, |
| 1140 | vif)); |
Haim Dreyfuss | 4db6558 | 2015-01-05 15:00:35 +0200 | [diff] [blame] | 1141 | |
Matti Gottlieb | 23ae612 | 2015-12-31 18:18:02 +0200 | [diff] [blame] | 1142 | if (type == IWL_MVM_SCAN_SCHED || type == IWL_MVM_SCAN_NETDETECT) |
Avraham Stern | 8465fe6 | 2015-06-21 12:06:13 +0300 | [diff] [blame] | 1143 | cmd->flags = cpu_to_le32(IWL_UMAC_SCAN_FLAG_PREEMPTIVE); |
| 1144 | |
Avraham Stern | cd55cce | 2015-08-19 12:46:12 +0300 | [diff] [blame] | 1145 | if (iwl_mvm_scan_use_ebs(mvm, vif)) |
Haim Dreyfuss | 4db6558 | 2015-01-05 15:00:35 +0200 | [diff] [blame] | 1146 | cmd->channel_flags = IWL_SCAN_CHANNEL_FLAG_EBS | |
| 1147 | IWL_SCAN_CHANNEL_FLAG_EBS_ACCURATE | |
| 1148 | IWL_SCAN_CHANNEL_FLAG_CACHE_ADD; |
| 1149 | |
Luciano Coelho | f7b788b | 2015-04-02 00:08:35 +0300 | [diff] [blame] | 1150 | cmd->n_channels = params->n_channels; |
David Spinadel | d249622 | 2014-05-20 12:46:37 +0300 | [diff] [blame] | 1151 | |
Luciano Coelho | e2ec4f6 | 2015-04-02 17:49:04 +0300 | [diff] [blame] | 1152 | iwl_scan_build_ssids(params, sec_part->direct_scan, &ssid_bitmap); |
David Spinadel | d249622 | 2014-05-20 12:46:37 +0300 | [diff] [blame] | 1153 | |
Luciano Coelho | f7b788b | 2015-04-02 00:08:35 +0300 | [diff] [blame] | 1154 | iwl_mvm_umac_scan_cfg_channels(mvm, params->channels, |
| 1155 | params->n_channels, ssid_bitmap, cmd); |
David Spinadel | d249622 | 2014-05-20 12:46:37 +0300 | [diff] [blame] | 1156 | |
Avraham Stern | cd55cce | 2015-08-19 12:46:12 +0300 | [diff] [blame] | 1157 | for (i = 0; i < params->n_scan_plans; i++) { |
Avraham Stern | cd55cce | 2015-08-19 12:46:12 +0300 | [diff] [blame] | 1158 | struct cfg80211_sched_scan_plan *scan_plan = |
| 1159 | ¶ms->scan_plans[i]; |
| 1160 | |
Avraham Stern | cd55cce | 2015-08-19 12:46:12 +0300 | [diff] [blame] | 1161 | sec_part->schedule[i].iter_count = scan_plan->iterations; |
| 1162 | sec_part->schedule[i].interval = |
| 1163 | cpu_to_le16(scan_plan->interval); |
| 1164 | } |
| 1165 | |
| 1166 | /* |
| 1167 | * If the number of iterations of the last scan plan is set to |
| 1168 | * zero, it should run infinitely. However, this is not always the case. |
| 1169 | * For example, when regular scan is requested the driver sets one scan |
| 1170 | * plan with one iteration. |
Luciano Coelho | 8423cdc | 2015-04-17 14:49:58 +0300 | [diff] [blame] | 1171 | */ |
Avraham Stern | cd55cce | 2015-08-19 12:46:12 +0300 | [diff] [blame] | 1172 | if (!sec_part->schedule[i - 1].iter_count) |
| 1173 | sec_part->schedule[i - 1].iter_count = 0xff; |
Luciano Coelho | cf5d317 | 2015-04-16 20:13:28 +0300 | [diff] [blame] | 1174 | |
Luciano Coelho | 283c249 | 2015-04-17 11:18:46 +0300 | [diff] [blame] | 1175 | sec_part->delay = cpu_to_le16(params->delay); |
Luciano Coelho | 45d1b12 | 2015-04-15 16:34:13 +0300 | [diff] [blame] | 1176 | sec_part->preq = params->preq; |
David Spinadel | d249622 | 2014-05-20 12:46:37 +0300 | [diff] [blame] | 1177 | |
Luciano Coelho | 8df3e68 | 2015-04-01 17:37:44 +0300 | [diff] [blame] | 1178 | return 0; |
David Spinadel | d249622 | 2014-05-20 12:46:37 +0300 | [diff] [blame] | 1179 | } |
| 1180 | |
Luciano Coelho | 6749dd8 | 2015-03-20 15:51:36 +0200 | [diff] [blame] | 1181 | static int iwl_mvm_num_scans(struct iwl_mvm *mvm) |
| 1182 | { |
| 1183 | return hweight32(mvm->scan_status & IWL_MVM_SCAN_MASK); |
| 1184 | } |
| 1185 | |
| 1186 | static int iwl_mvm_check_running_scans(struct iwl_mvm *mvm, int type) |
| 1187 | { |
| 1188 | /* This looks a bit arbitrary, but the idea is that if we run |
| 1189 | * out of possible simultaneous scans and the userspace is |
| 1190 | * trying to run a scan type that is already running, we |
| 1191 | * return -EBUSY. But if the userspace wants to start a |
| 1192 | * different type of scan, we stop the opposite type to make |
| 1193 | * space for the new request. The reason is backwards |
| 1194 | * compatibility with old wpa_supplicant that wouldn't stop a |
| 1195 | * scheduled scan before starting a normal scan. |
| 1196 | */ |
| 1197 | |
| 1198 | if (iwl_mvm_num_scans(mvm) < mvm->max_scans) |
| 1199 | return 0; |
| 1200 | |
| 1201 | /* Use a switch, even though this is a bitmask, so that more |
| 1202 | * than one bits set will fall in default and we will warn. |
| 1203 | */ |
| 1204 | switch (type) { |
| 1205 | case IWL_MVM_SCAN_REGULAR: |
| 1206 | if (mvm->scan_status & IWL_MVM_SCAN_REGULAR_MASK) |
| 1207 | return -EBUSY; |
Luciano Coelho | c7d4248 | 2015-05-07 16:00:26 +0300 | [diff] [blame] | 1208 | return iwl_mvm_scan_stop(mvm, IWL_MVM_SCAN_SCHED, true); |
Luciano Coelho | 6749dd8 | 2015-03-20 15:51:36 +0200 | [diff] [blame] | 1209 | case IWL_MVM_SCAN_SCHED: |
| 1210 | if (mvm->scan_status & IWL_MVM_SCAN_SCHED_MASK) |
| 1211 | return -EBUSY; |
Nicholas Krause | 04b0899 | 2015-09-22 20:24:19 -0400 | [diff] [blame] | 1212 | return iwl_mvm_scan_stop(mvm, IWL_MVM_SCAN_REGULAR, true); |
Luciano Coelho | 19945df | 2015-03-20 16:11:28 +0200 | [diff] [blame] | 1213 | case IWL_MVM_SCAN_NETDETECT: |
| 1214 | /* No need to stop anything for net-detect since the |
| 1215 | * firmware is restarted anyway. This way, any sched |
| 1216 | * scans that were running will be restarted when we |
| 1217 | * resume. |
| 1218 | */ |
| 1219 | return 0; |
Luciano Coelho | 6749dd8 | 2015-03-20 15:51:36 +0200 | [diff] [blame] | 1220 | default: |
| 1221 | WARN_ON(1); |
| 1222 | break; |
| 1223 | } |
| 1224 | |
| 1225 | return -EIO; |
| 1226 | } |
| 1227 | |
Luca Coelho | 69e0464 | 2016-05-03 12:18:33 +0300 | [diff] [blame] | 1228 | #define SCAN_TIMEOUT 20000 |
Luca Coelho | 728e825 | 2016-03-11 09:20:37 +0200 | [diff] [blame] | 1229 | |
Luca Coelho | 69e0464 | 2016-05-03 12:18:33 +0300 | [diff] [blame] | 1230 | void iwl_mvm_scan_timeout_wk(struct work_struct *work) |
Luca Coelho | 728e825 | 2016-03-11 09:20:37 +0200 | [diff] [blame] | 1231 | { |
Luca Coelho | 69e0464 | 2016-05-03 12:18:33 +0300 | [diff] [blame] | 1232 | struct delayed_work *delayed_work = to_delayed_work(work); |
| 1233 | struct iwl_mvm *mvm = container_of(delayed_work, struct iwl_mvm, |
| 1234 | scan_timeout_dwork); |
Luca Coelho | 728e825 | 2016-03-11 09:20:37 +0200 | [diff] [blame] | 1235 | |
| 1236 | IWL_ERR(mvm, "regular scan timed out\n"); |
| 1237 | |
Luca Coelho | 728e825 | 2016-03-11 09:20:37 +0200 | [diff] [blame] | 1238 | iwl_force_nmi(mvm->trans); |
| 1239 | } |
| 1240 | |
Luciano Coelho | 6749dd8 | 2015-03-20 15:51:36 +0200 | [diff] [blame] | 1241 | int iwl_mvm_reg_scan_start(struct iwl_mvm *mvm, struct ieee80211_vif *vif, |
| 1242 | struct cfg80211_scan_request *req, |
| 1243 | struct ieee80211_scan_ies *ies) |
| 1244 | { |
Luciano Coelho | 3db7c6e | 2015-04-01 17:09:56 +0300 | [diff] [blame] | 1245 | struct iwl_host_cmd hcmd = { |
| 1246 | .len = { iwl_mvm_scan_size(mvm), }, |
| 1247 | .data = { mvm->scan_cmd, }, |
| 1248 | .dataflags = { IWL_HCMD_DFL_NOCOPY, }, |
| 1249 | }; |
| 1250 | struct iwl_mvm_scan_params params = {}; |
Luciano Coelho | 6749dd8 | 2015-03-20 15:51:36 +0200 | [diff] [blame] | 1251 | int ret; |
Avraham Stern | cd55cce | 2015-08-19 12:46:12 +0300 | [diff] [blame] | 1252 | struct cfg80211_sched_scan_plan scan_plan = { .iterations = 1 }; |
Luciano Coelho | 6749dd8 | 2015-03-20 15:51:36 +0200 | [diff] [blame] | 1253 | |
| 1254 | lockdep_assert_held(&mvm->mutex); |
| 1255 | |
| 1256 | if (iwl_mvm_is_lar_supported(mvm) && !mvm->lar_regdom_set) { |
| 1257 | IWL_ERR(mvm, "scan while LAR regdomain is not set\n"); |
| 1258 | return -EBUSY; |
| 1259 | } |
| 1260 | |
| 1261 | ret = iwl_mvm_check_running_scans(mvm, IWL_MVM_SCAN_REGULAR); |
| 1262 | if (ret) |
| 1263 | return ret; |
| 1264 | |
Luciano Coelho | 3db7c6e | 2015-04-01 17:09:56 +0300 | [diff] [blame] | 1265 | /* we should have failed registration if scan_cmd was NULL */ |
| 1266 | if (WARN_ON(!mvm->scan_cmd)) |
| 1267 | return -ENOMEM; |
| 1268 | |
| 1269 | if (!iwl_mvm_scan_fits(mvm, req->n_ssids, ies, req->n_channels)) |
| 1270 | return -ENOBUFS; |
| 1271 | |
Luciano Coelho | 4b81705 | 2015-04-15 16:21:16 +0300 | [diff] [blame] | 1272 | params.n_ssids = req->n_ssids; |
| 1273 | params.flags = req->flags; |
Luciano Coelho | f7b788b | 2015-04-02 00:08:35 +0300 | [diff] [blame] | 1274 | params.n_channels = req->n_channels; |
| 1275 | params.delay = 0; |
Luciano Coelho | f7b788b | 2015-04-02 00:08:35 +0300 | [diff] [blame] | 1276 | params.ssids = req->ssids; |
| 1277 | params.channels = req->channels; |
| 1278 | params.mac_addr = req->mac_addr; |
| 1279 | params.mac_addr_mask = req->mac_addr_mask; |
| 1280 | params.no_cck = req->no_cck; |
| 1281 | params.pass_all = true; |
| 1282 | params.n_match_sets = 0; |
| 1283 | params.match_sets = NULL; |
Luciano Coelho | 3db7c6e | 2015-04-01 17:09:56 +0300 | [diff] [blame] | 1284 | |
Avraham Stern | cd55cce | 2015-08-19 12:46:12 +0300 | [diff] [blame] | 1285 | params.scan_plans = &scan_plan; |
| 1286 | params.n_scan_plans = 1; |
Luciano Coelho | cf5d317 | 2015-04-16 20:13:28 +0300 | [diff] [blame] | 1287 | |
Avraham Stern | 355346b | 2015-11-26 11:22:33 +0200 | [diff] [blame] | 1288 | params.type = |
| 1289 | iwl_mvm_get_scan_type(mvm, |
| 1290 | vif->type == NL80211_IFTYPE_P2P_DEVICE); |
Luciano Coelho | 4b81705 | 2015-04-15 16:21:16 +0300 | [diff] [blame] | 1291 | |
Luciano Coelho | 45d1b12 | 2015-04-15 16:34:13 +0300 | [diff] [blame] | 1292 | iwl_mvm_build_scan_probe(mvm, vif, ies, ¶ms); |
| 1293 | |
Johannes Berg | 859d914 | 2015-06-01 17:11:11 +0200 | [diff] [blame] | 1294 | if (fw_has_capa(&mvm->fw->ucode_capa, IWL_UCODE_TLV_CAPA_UMAC_SCAN)) { |
Johannes Berg | 88742c9 | 2015-06-30 15:31:22 +0200 | [diff] [blame] | 1295 | hcmd.id = iwl_cmd_id(SCAN_REQ_UMAC, IWL_ALWAYS_LONG_GROUP, 0); |
Luciano Coelho | 6185af2a | 2015-05-07 11:13:24 +0300 | [diff] [blame] | 1296 | ret = iwl_mvm_scan_umac(mvm, vif, ¶ms, |
| 1297 | IWL_MVM_SCAN_REGULAR); |
Luciano Coelho | 3db7c6e | 2015-04-01 17:09:56 +0300 | [diff] [blame] | 1298 | } else { |
| 1299 | hcmd.id = SCAN_OFFLOAD_REQUEST_CMD; |
Luciano Coelho | 45d1b12 | 2015-04-15 16:34:13 +0300 | [diff] [blame] | 1300 | ret = iwl_mvm_scan_lmac(mvm, vif, ¶ms); |
Luciano Coelho | 3db7c6e | 2015-04-01 17:09:56 +0300 | [diff] [blame] | 1301 | } |
| 1302 | |
| 1303 | if (ret) |
| 1304 | return ret; |
| 1305 | |
| 1306 | ret = iwl_mvm_send_cmd(mvm, &hcmd); |
Eliad Peller | 78ba82f | 2015-10-15 10:58:48 +0300 | [diff] [blame] | 1307 | if (ret) { |
Luciano Coelho | 3db7c6e | 2015-04-01 17:09:56 +0300 | [diff] [blame] | 1308 | /* If the scan failed, it usually means that the FW was unable |
| 1309 | * to allocate the time events. Warn on it, but maybe we |
| 1310 | * should try to send the command again with different params. |
| 1311 | */ |
| 1312 | IWL_ERR(mvm, "Scan failed! ret %d\n", ret); |
Eliad Peller | 78ba82f | 2015-10-15 10:58:48 +0300 | [diff] [blame] | 1313 | return ret; |
Luciano Coelho | 3db7c6e | 2015-04-01 17:09:56 +0300 | [diff] [blame] | 1314 | } |
Luciano Coelho | 6749dd8 | 2015-03-20 15:51:36 +0200 | [diff] [blame] | 1315 | |
Eliad Peller | 78ba82f | 2015-10-15 10:58:48 +0300 | [diff] [blame] | 1316 | IWL_DEBUG_SCAN(mvm, "Scan request was sent successfully\n"); |
| 1317 | mvm->scan_status |= IWL_MVM_SCAN_REGULAR; |
| 1318 | iwl_mvm_ref(mvm, IWL_MVM_REF_SCAN); |
Luciano Coelho | 6749dd8 | 2015-03-20 15:51:36 +0200 | [diff] [blame] | 1319 | |
Luca Coelho | 69e0464 | 2016-05-03 12:18:33 +0300 | [diff] [blame] | 1320 | queue_delayed_work(system_wq, &mvm->scan_timeout_dwork, |
| 1321 | msecs_to_jiffies(SCAN_TIMEOUT)); |
Luca Coelho | 728e825 | 2016-03-11 09:20:37 +0200 | [diff] [blame] | 1322 | |
Eliad Peller | 78ba82f | 2015-10-15 10:58:48 +0300 | [diff] [blame] | 1323 | return 0; |
Luciano Coelho | 6749dd8 | 2015-03-20 15:51:36 +0200 | [diff] [blame] | 1324 | } |
| 1325 | |
Luciano Coelho | 65ff556 | 2015-03-20 13:35:47 +0200 | [diff] [blame] | 1326 | int iwl_mvm_sched_scan_start(struct iwl_mvm *mvm, |
| 1327 | struct ieee80211_vif *vif, |
| 1328 | struct cfg80211_sched_scan_request *req, |
Luciano Coelho | 19945df | 2015-03-20 16:11:28 +0200 | [diff] [blame] | 1329 | struct ieee80211_scan_ies *ies, |
| 1330 | int type) |
Luciano Coelho | 65ff556 | 2015-03-20 13:35:47 +0200 | [diff] [blame] | 1331 | { |
Luciano Coelho | 8df3e68 | 2015-04-01 17:37:44 +0300 | [diff] [blame] | 1332 | struct iwl_host_cmd hcmd = { |
| 1333 | .len = { iwl_mvm_scan_size(mvm), }, |
| 1334 | .data = { mvm->scan_cmd, }, |
| 1335 | .dataflags = { IWL_HCMD_DFL_NOCOPY, }, |
| 1336 | }; |
| 1337 | struct iwl_mvm_scan_params params = {}; |
Luciano Coelho | 65ff556 | 2015-03-20 13:35:47 +0200 | [diff] [blame] | 1338 | int ret; |
| 1339 | |
Luciano Coelho | 6749dd8 | 2015-03-20 15:51:36 +0200 | [diff] [blame] | 1340 | lockdep_assert_held(&mvm->mutex); |
| 1341 | |
| 1342 | if (iwl_mvm_is_lar_supported(mvm) && !mvm->lar_regdom_set) { |
| 1343 | IWL_ERR(mvm, "sched-scan while LAR regdomain is not set\n"); |
| 1344 | return -EBUSY; |
| 1345 | } |
| 1346 | |
Luciano Coelho | 19945df | 2015-03-20 16:11:28 +0200 | [diff] [blame] | 1347 | ret = iwl_mvm_check_running_scans(mvm, type); |
Luciano Coelho | 6749dd8 | 2015-03-20 15:51:36 +0200 | [diff] [blame] | 1348 | if (ret) |
| 1349 | return ret; |
| 1350 | |
Luciano Coelho | 8df3e68 | 2015-04-01 17:37:44 +0300 | [diff] [blame] | 1351 | /* we should have failed registration if scan_cmd was NULL */ |
| 1352 | if (WARN_ON(!mvm->scan_cmd)) |
| 1353 | return -ENOMEM; |
| 1354 | |
| 1355 | if (!iwl_mvm_scan_fits(mvm, req->n_ssids, ies, req->n_channels)) |
| 1356 | return -ENOBUFS; |
| 1357 | |
Luciano Coelho | 4b81705 | 2015-04-15 16:21:16 +0300 | [diff] [blame] | 1358 | params.n_ssids = req->n_ssids; |
| 1359 | params.flags = req->flags; |
Luciano Coelho | f7b788b | 2015-04-02 00:08:35 +0300 | [diff] [blame] | 1360 | params.n_channels = req->n_channels; |
Luciano Coelho | f7b788b | 2015-04-02 00:08:35 +0300 | [diff] [blame] | 1361 | params.ssids = req->ssids; |
| 1362 | params.channels = req->channels; |
| 1363 | params.mac_addr = req->mac_addr; |
| 1364 | params.mac_addr_mask = req->mac_addr_mask; |
| 1365 | params.no_cck = false; |
| 1366 | params.pass_all = iwl_mvm_scan_pass_all(mvm, req); |
| 1367 | params.n_match_sets = req->n_match_sets; |
| 1368 | params.match_sets = req->match_sets; |
Avraham Stern | cd55cce | 2015-08-19 12:46:12 +0300 | [diff] [blame] | 1369 | if (!req->n_scan_plans) |
| 1370 | return -EINVAL; |
Luciano Coelho | f7b788b | 2015-04-02 00:08:35 +0300 | [diff] [blame] | 1371 | |
Avraham Stern | cd55cce | 2015-08-19 12:46:12 +0300 | [diff] [blame] | 1372 | params.n_scan_plans = req->n_scan_plans; |
| 1373 | params.scan_plans = req->scan_plans; |
David Spinadel | 3b44a0e | 2015-06-21 11:57:36 +0300 | [diff] [blame] | 1374 | |
Avraham Stern | 355346b | 2015-11-26 11:22:33 +0200 | [diff] [blame] | 1375 | params.type = |
| 1376 | iwl_mvm_get_scan_type(mvm, |
| 1377 | vif->type == NL80211_IFTYPE_P2P_DEVICE); |
Luciano Coelho | cf5d317 | 2015-04-16 20:13:28 +0300 | [diff] [blame] | 1378 | |
Luciano Coelho | 283c249 | 2015-04-17 11:18:46 +0300 | [diff] [blame] | 1379 | /* In theory, LMAC scans can handle a 32-bit delay, but since |
| 1380 | * waiting for over 18 hours to start the scan is a bit silly |
| 1381 | * and to keep it aligned with UMAC scans (which only support |
| 1382 | * 16-bit delays), trim it down to 16-bits. |
| 1383 | */ |
| 1384 | if (req->delay > U16_MAX) { |
| 1385 | IWL_DEBUG_SCAN(mvm, |
| 1386 | "delay value is > 16-bits, set to max possible\n"); |
| 1387 | params.delay = U16_MAX; |
| 1388 | } else { |
| 1389 | params.delay = req->delay; |
| 1390 | } |
| 1391 | |
Luciano Coelho | 65ff556 | 2015-03-20 13:35:47 +0200 | [diff] [blame] | 1392 | ret = iwl_mvm_config_sched_scan_profiles(mvm, req); |
| 1393 | if (ret) |
| 1394 | return ret; |
| 1395 | |
Luciano Coelho | 45d1b12 | 2015-04-15 16:34:13 +0300 | [diff] [blame] | 1396 | iwl_mvm_build_scan_probe(mvm, vif, ies, ¶ms); |
| 1397 | |
Johannes Berg | 859d914 | 2015-06-01 17:11:11 +0200 | [diff] [blame] | 1398 | if (fw_has_capa(&mvm->fw->ucode_capa, IWL_UCODE_TLV_CAPA_UMAC_SCAN)) { |
Johannes Berg | 88742c9 | 2015-06-30 15:31:22 +0200 | [diff] [blame] | 1399 | hcmd.id = iwl_cmd_id(SCAN_REQ_UMAC, IWL_ALWAYS_LONG_GROUP, 0); |
Matti Gottlieb | 23ae612 | 2015-12-31 18:18:02 +0200 | [diff] [blame] | 1400 | ret = iwl_mvm_scan_umac(mvm, vif, ¶ms, type); |
Luciano Coelho | 65ff556 | 2015-03-20 13:35:47 +0200 | [diff] [blame] | 1401 | } else { |
Luciano Coelho | 8df3e68 | 2015-04-01 17:37:44 +0300 | [diff] [blame] | 1402 | hcmd.id = SCAN_OFFLOAD_REQUEST_CMD; |
Luciano Coelho | 7d7de1e | 2015-04-17 09:53:55 +0300 | [diff] [blame] | 1403 | ret = iwl_mvm_scan_lmac(mvm, vif, ¶ms); |
Luciano Coelho | 8df3e68 | 2015-04-01 17:37:44 +0300 | [diff] [blame] | 1404 | } |
| 1405 | |
| 1406 | if (ret) |
| 1407 | return ret; |
| 1408 | |
| 1409 | ret = iwl_mvm_send_cmd(mvm, &hcmd); |
| 1410 | if (!ret) { |
| 1411 | IWL_DEBUG_SCAN(mvm, |
| 1412 | "Sched scan request was sent successfully\n"); |
| 1413 | mvm->scan_status |= type; |
| 1414 | } else { |
| 1415 | /* If the scan failed, it usually means that the FW was unable |
| 1416 | * to allocate the time events. Warn on it, but maybe we |
| 1417 | * should try to send the command again with different params. |
| 1418 | */ |
| 1419 | IWL_ERR(mvm, "Sched scan failed! ret %d\n", ret); |
Luciano Coelho | 65ff556 | 2015-03-20 13:35:47 +0200 | [diff] [blame] | 1420 | } |
| 1421 | |
| 1422 | return ret; |
| 1423 | } |
| 1424 | |
Johannes Berg | 0416841 | 2015-06-23 21:22:09 +0200 | [diff] [blame] | 1425 | void iwl_mvm_rx_umac_scan_complete_notif(struct iwl_mvm *mvm, |
| 1426 | struct iwl_rx_cmd_buffer *rxb) |
David Spinadel | d249622 | 2014-05-20 12:46:37 +0300 | [diff] [blame] | 1427 | { |
| 1428 | struct iwl_rx_packet *pkt = rxb_addr(rxb); |
| 1429 | struct iwl_umac_scan_complete *notif = (void *)pkt->data; |
| 1430 | u32 uid = __le32_to_cpu(notif->uid); |
Luciano Coelho | 8d14ccd | 2015-05-07 17:05:30 +0300 | [diff] [blame] | 1431 | bool aborted = (notif->status == IWL_SCAN_OFFLOAD_ABORTED); |
David Spinadel | d249622 | 2014-05-20 12:46:37 +0300 | [diff] [blame] | 1432 | |
Luciano Coelho | 8d14ccd | 2015-05-07 17:05:30 +0300 | [diff] [blame] | 1433 | if (WARN_ON(!(mvm->scan_uid_status[uid] & mvm->scan_status))) |
Johannes Berg | 0416841 | 2015-06-23 21:22:09 +0200 | [diff] [blame] | 1434 | return; |
David Spinadel | d249622 | 2014-05-20 12:46:37 +0300 | [diff] [blame] | 1435 | |
Luciano Coelho | 8d14ccd | 2015-05-07 17:05:30 +0300 | [diff] [blame] | 1436 | /* if the scan is already stopping, we don't need to notify mac80211 */ |
| 1437 | if (mvm->scan_uid_status[uid] == IWL_MVM_SCAN_REGULAR) { |
Avraham Stern | 7947d3e | 2016-07-05 15:23:12 +0300 | [diff] [blame] | 1438 | struct cfg80211_scan_info info = { |
| 1439 | .aborted = aborted, |
| 1440 | }; |
| 1441 | |
| 1442 | ieee80211_scan_completed(mvm->hw, &info); |
Luciano Coelho | 8d14ccd | 2015-05-07 17:05:30 +0300 | [diff] [blame] | 1443 | iwl_mvm_unref(mvm, IWL_MVM_REF_SCAN); |
Luca Coelho | 69e0464 | 2016-05-03 12:18:33 +0300 | [diff] [blame] | 1444 | cancel_delayed_work(&mvm->scan_timeout_dwork); |
Luciano Coelho | 8d14ccd | 2015-05-07 17:05:30 +0300 | [diff] [blame] | 1445 | } else if (mvm->scan_uid_status[uid] == IWL_MVM_SCAN_SCHED) { |
| 1446 | ieee80211_sched_scan_stopped(mvm->hw); |
Luca Coelho | a339e91 | 2016-02-02 22:58:46 +0200 | [diff] [blame] | 1447 | mvm->sched_scan_pass_all = SCHED_SCAN_PASS_ALL_DISABLED; |
Luciano Coelho | 8d14ccd | 2015-05-07 17:05:30 +0300 | [diff] [blame] | 1448 | } |
| 1449 | |
| 1450 | mvm->scan_status &= ~mvm->scan_uid_status[uid]; |
David Spinadel | d249622 | 2014-05-20 12:46:37 +0300 | [diff] [blame] | 1451 | IWL_DEBUG_SCAN(mvm, |
Ayala Beker | a7b3bc9 | 2015-08-20 04:00:38 +0300 | [diff] [blame] | 1452 | "Scan completed, uid %u type %u, status %s, EBS status %s\n", |
Luciano Coelho | 8d14ccd | 2015-05-07 17:05:30 +0300 | [diff] [blame] | 1453 | uid, mvm->scan_uid_status[uid], |
David Spinadel | d249622 | 2014-05-20 12:46:37 +0300 | [diff] [blame] | 1454 | notif->status == IWL_SCAN_OFFLOAD_COMPLETED ? |
| 1455 | "completed" : "aborted", |
Ayala Beker | a7b3bc9 | 2015-08-20 04:00:38 +0300 | [diff] [blame] | 1456 | iwl_mvm_ebs_status_str(notif->ebs_status)); |
| 1457 | IWL_DEBUG_SCAN(mvm, |
| 1458 | "Last line %d, Last iteration %d, Time from last iteration %d\n", |
Ayala Beker | 1a84e77 | 2015-07-22 13:54:31 +0300 | [diff] [blame] | 1459 | notif->last_schedule, notif->last_iter, |
| 1460 | __le32_to_cpu(notif->time_from_last_iter)); |
David Spinadel | d249622 | 2014-05-20 12:46:37 +0300 | [diff] [blame] | 1461 | |
David Spinadel | f0bf859 | 2015-05-20 11:56:59 +0300 | [diff] [blame] | 1462 | if (notif->ebs_status != IWL_SCAN_EBS_SUCCESS && |
| 1463 | notif->ebs_status != IWL_SCAN_EBS_INACTIVE) |
Haim Dreyfuss | 5a4b2af | 2015-01-13 11:54:51 +0200 | [diff] [blame] | 1464 | mvm->last_ebs_successful = false; |
| 1465 | |
Luciano Coelho | 6185af2a | 2015-05-07 11:13:24 +0300 | [diff] [blame] | 1466 | mvm->scan_uid_status[uid] = 0; |
David Spinadel | d249622 | 2014-05-20 12:46:37 +0300 | [diff] [blame] | 1467 | } |
| 1468 | |
Johannes Berg | 0416841 | 2015-06-23 21:22:09 +0200 | [diff] [blame] | 1469 | void iwl_mvm_rx_umac_scan_iter_complete_notif(struct iwl_mvm *mvm, |
| 1470 | struct iwl_rx_cmd_buffer *rxb) |
Avraham Stern | ee9219b | 2015-03-23 15:09:27 +0200 | [diff] [blame] | 1471 | { |
| 1472 | struct iwl_rx_packet *pkt = rxb_addr(rxb); |
| 1473 | struct iwl_umac_scan_iter_complete_notif *notif = (void *)pkt->data; |
| 1474 | u8 buf[256]; |
| 1475 | |
| 1476 | IWL_DEBUG_SCAN(mvm, |
| 1477 | "UMAC Scan iteration complete: status=0x%x scanned_channels=%d channels list: %s\n", |
| 1478 | notif->status, notif->scanned_channels, |
| 1479 | iwl_mvm_dump_channel_list(notif->results, |
| 1480 | notif->scanned_channels, buf, |
| 1481 | sizeof(buf))); |
Luca Coelho | a339e91 | 2016-02-02 22:58:46 +0200 | [diff] [blame] | 1482 | |
| 1483 | if (mvm->sched_scan_pass_all == SCHED_SCAN_PASS_ALL_FOUND) { |
| 1484 | IWL_DEBUG_SCAN(mvm, "Pass all scheduled scan results found\n"); |
| 1485 | ieee80211_sched_scan_results(mvm->hw); |
| 1486 | mvm->sched_scan_pass_all = SCHED_SCAN_PASS_ALL_ENABLED; |
| 1487 | } |
Avraham Stern | ee9219b | 2015-03-23 15:09:27 +0200 | [diff] [blame] | 1488 | } |
| 1489 | |
Luciano Coelho | 434f3c1 | 2015-05-07 14:41:44 +0300 | [diff] [blame] | 1490 | static int iwl_mvm_umac_scan_abort(struct iwl_mvm *mvm, int type) |
David Spinadel | d249622 | 2014-05-20 12:46:37 +0300 | [diff] [blame] | 1491 | { |
Johannes Berg | 88742c9 | 2015-06-30 15:31:22 +0200 | [diff] [blame] | 1492 | struct iwl_umac_scan_abort cmd = {}; |
Luciano Coelho | 434f3c1 | 2015-05-07 14:41:44 +0300 | [diff] [blame] | 1493 | int uid, ret; |
David Spinadel | d249622 | 2014-05-20 12:46:37 +0300 | [diff] [blame] | 1494 | |
| 1495 | lockdep_assert_held(&mvm->mutex); |
| 1496 | |
Luciano Coelho | 434f3c1 | 2015-05-07 14:41:44 +0300 | [diff] [blame] | 1497 | /* We should always get a valid index here, because we already |
| 1498 | * checked that this type of scan was running in the generic |
| 1499 | * code. |
| 1500 | */ |
| 1501 | uid = iwl_mvm_scan_uid_by_status(mvm, type); |
| 1502 | if (WARN_ON_ONCE(uid < 0)) |
| 1503 | return uid; |
| 1504 | |
| 1505 | cmd.uid = cpu_to_le32(uid); |
| 1506 | |
David Spinadel | d249622 | 2014-05-20 12:46:37 +0300 | [diff] [blame] | 1507 | IWL_DEBUG_SCAN(mvm, "Sending scan abort, uid %u\n", uid); |
| 1508 | |
Johannes Berg | 88742c9 | 2015-06-30 15:31:22 +0200 | [diff] [blame] | 1509 | ret = iwl_mvm_send_cmd_pdu(mvm, |
| 1510 | iwl_cmd_id(SCAN_ABORT_UMAC, |
| 1511 | IWL_ALWAYS_LONG_GROUP, 0), |
| 1512 | 0, sizeof(cmd), &cmd); |
Luciano Coelho | 434f3c1 | 2015-05-07 14:41:44 +0300 | [diff] [blame] | 1513 | if (!ret) |
Luciano Coelho | 8d14ccd | 2015-05-07 17:05:30 +0300 | [diff] [blame] | 1514 | mvm->scan_uid_status[uid] = type << IWL_MVM_SCAN_STOPPING_SHIFT; |
Luciano Coelho | 434f3c1 | 2015-05-07 14:41:44 +0300 | [diff] [blame] | 1515 | |
| 1516 | return ret; |
David Spinadel | d249622 | 2014-05-20 12:46:37 +0300 | [diff] [blame] | 1517 | } |
| 1518 | |
Luciano Coelho | f246179 | 2015-05-07 15:23:19 +0300 | [diff] [blame] | 1519 | static int iwl_mvm_scan_stop_wait(struct iwl_mvm *mvm, int type) |
David Spinadel | d249622 | 2014-05-20 12:46:37 +0300 | [diff] [blame] | 1520 | { |
| 1521 | struct iwl_notification_wait wait_scan_done; |
Sara Sharon | 6eb031d | 2015-07-13 14:50:47 +0300 | [diff] [blame] | 1522 | static const u16 scan_done_notif[] = { SCAN_COMPLETE_UMAC, |
Luciano Coelho | f246179 | 2015-05-07 15:23:19 +0300 | [diff] [blame] | 1523 | SCAN_OFFLOAD_COMPLETE, }; |
Luciano Coelho | 434f3c1 | 2015-05-07 14:41:44 +0300 | [diff] [blame] | 1524 | int ret; |
David Spinadel | d249622 | 2014-05-20 12:46:37 +0300 | [diff] [blame] | 1525 | |
Luciano Coelho | f246179 | 2015-05-07 15:23:19 +0300 | [diff] [blame] | 1526 | lockdep_assert_held(&mvm->mutex); |
| 1527 | |
David Spinadel | d249622 | 2014-05-20 12:46:37 +0300 | [diff] [blame] | 1528 | iwl_init_notification_wait(&mvm->notif_wait, &wait_scan_done, |
| 1529 | scan_done_notif, |
| 1530 | ARRAY_SIZE(scan_done_notif), |
Luciano Coelho | 434f3c1 | 2015-05-07 14:41:44 +0300 | [diff] [blame] | 1531 | NULL, NULL); |
David Spinadel | d249622 | 2014-05-20 12:46:37 +0300 | [diff] [blame] | 1532 | |
| 1533 | IWL_DEBUG_SCAN(mvm, "Preparing to stop scan, type %x\n", type); |
| 1534 | |
Johannes Berg | 859d914 | 2015-06-01 17:11:11 +0200 | [diff] [blame] | 1535 | if (fw_has_capa(&mvm->fw->ucode_capa, IWL_UCODE_TLV_CAPA_UMAC_SCAN)) |
Luciano Coelho | f246179 | 2015-05-07 15:23:19 +0300 | [diff] [blame] | 1536 | ret = iwl_mvm_umac_scan_abort(mvm, type); |
| 1537 | else |
| 1538 | ret = iwl_mvm_lmac_scan_abort(mvm); |
| 1539 | |
David Spinadel | d249622 | 2014-05-20 12:46:37 +0300 | [diff] [blame] | 1540 | if (ret) { |
Luciano Coelho | 434f3c1 | 2015-05-07 14:41:44 +0300 | [diff] [blame] | 1541 | IWL_DEBUG_SCAN(mvm, "couldn't stop scan type %d\n", type); |
David Spinadel | d249622 | 2014-05-20 12:46:37 +0300 | [diff] [blame] | 1542 | iwl_remove_notification(&mvm->notif_wait, &wait_scan_done); |
| 1543 | return ret; |
| 1544 | } |
| 1545 | |
| 1546 | ret = iwl_wait_notification(&mvm->notif_wait, &wait_scan_done, 1 * HZ); |
David Spinadel | d249622 | 2014-05-20 12:46:37 +0300 | [diff] [blame] | 1547 | |
| 1548 | return ret; |
| 1549 | } |
| 1550 | |
| 1551 | int iwl_mvm_scan_size(struct iwl_mvm *mvm) |
| 1552 | { |
Johannes Berg | 859d914 | 2015-06-01 17:11:11 +0200 | [diff] [blame] | 1553 | if (fw_has_capa(&mvm->fw->ucode_capa, IWL_UCODE_TLV_CAPA_UMAC_SCAN)) |
David Spinadel | d249622 | 2014-05-20 12:46:37 +0300 | [diff] [blame] | 1554 | return sizeof(struct iwl_scan_req_umac) + |
| 1555 | sizeof(struct iwl_scan_channel_cfg_umac) * |
| 1556 | mvm->fw->ucode_capa.n_scan_channels + |
| 1557 | sizeof(struct iwl_scan_req_umac_tail); |
| 1558 | |
Luciano Coelho | 65ff556 | 2015-03-20 13:35:47 +0200 | [diff] [blame] | 1559 | return sizeof(struct iwl_scan_req_lmac) + |
Luciano Coelho | 1f94038 | 2015-02-10 13:03:38 +0200 | [diff] [blame] | 1560 | sizeof(struct iwl_scan_channel_cfg_lmac) * |
| 1561 | mvm->fw->ucode_capa.n_scan_channels + |
| 1562 | sizeof(struct iwl_scan_probe_req); |
David Spinadel | d249622 | 2014-05-20 12:46:37 +0300 | [diff] [blame] | 1563 | } |
David Spinadel | 4ffb365 | 2015-03-10 10:06:02 +0200 | [diff] [blame] | 1564 | |
| 1565 | /* |
| 1566 | * This function is used in nic restart flow, to inform mac80211 about scans |
| 1567 | * that was aborted by restart flow or by an assert. |
| 1568 | */ |
| 1569 | void iwl_mvm_report_scan_aborted(struct iwl_mvm *mvm) |
| 1570 | { |
Johannes Berg | 859d914 | 2015-06-01 17:11:11 +0200 | [diff] [blame] | 1571 | if (fw_has_capa(&mvm->fw->ucode_capa, IWL_UCODE_TLV_CAPA_UMAC_SCAN)) { |
Luciano Coelho | 6185af2a | 2015-05-07 11:13:24 +0300 | [diff] [blame] | 1572 | int uid, i; |
Alexander Bondar | 963221b | 2015-03-26 11:07:35 +0200 | [diff] [blame] | 1573 | |
Luciano Coelho | 6185af2a | 2015-05-07 11:13:24 +0300 | [diff] [blame] | 1574 | uid = iwl_mvm_scan_uid_by_status(mvm, IWL_MVM_SCAN_REGULAR); |
| 1575 | if (uid >= 0) { |
Avraham Stern | 7947d3e | 2016-07-05 15:23:12 +0300 | [diff] [blame] | 1576 | struct cfg80211_scan_info info = { |
| 1577 | .aborted = true, |
| 1578 | }; |
| 1579 | |
| 1580 | ieee80211_scan_completed(mvm->hw, &info); |
Luciano Coelho | 6185af2a | 2015-05-07 11:13:24 +0300 | [diff] [blame] | 1581 | mvm->scan_uid_status[uid] = 0; |
Alexander Bondar | 963221b | 2015-03-26 11:07:35 +0200 | [diff] [blame] | 1582 | } |
Luciano Coelho | 6185af2a | 2015-05-07 11:13:24 +0300 | [diff] [blame] | 1583 | uid = iwl_mvm_scan_uid_by_status(mvm, IWL_MVM_SCAN_SCHED); |
| 1584 | if (uid >= 0 && !mvm->restart_fw) { |
David Spinadel | 4ffb365 | 2015-03-10 10:06:02 +0200 | [diff] [blame] | 1585 | ieee80211_sched_scan_stopped(mvm->hw); |
Luca Coelho | a339e91 | 2016-02-02 22:58:46 +0200 | [diff] [blame] | 1586 | mvm->sched_scan_pass_all = SCHED_SCAN_PASS_ALL_DISABLED; |
Luciano Coelho | 6185af2a | 2015-05-07 11:13:24 +0300 | [diff] [blame] | 1587 | mvm->scan_uid_status[uid] = 0; |
Alexander Bondar | 963221b | 2015-03-26 11:07:35 +0200 | [diff] [blame] | 1588 | } |
| 1589 | |
| 1590 | /* We shouldn't have any UIDs still set. Loop over all the |
| 1591 | * UIDs to make sure there's nothing left there and warn if |
| 1592 | * any is found. |
| 1593 | */ |
Luciano Coelho | 507e4cd | 2015-03-19 22:58:33 +0200 | [diff] [blame] | 1594 | for (i = 0; i < mvm->max_scans; i++) { |
Luciano Coelho | 6185af2a | 2015-05-07 11:13:24 +0300 | [diff] [blame] | 1595 | if (WARN_ONCE(mvm->scan_uid_status[i], |
| 1596 | "UMAC scan UID %d status was not cleaned\n", |
| 1597 | i)) |
| 1598 | mvm->scan_uid_status[i] = 0; |
Alexander Bondar | 963221b | 2015-03-26 11:07:35 +0200 | [diff] [blame] | 1599 | } |
David Spinadel | 4ffb365 | 2015-03-10 10:06:02 +0200 | [diff] [blame] | 1600 | } else { |
Avraham Stern | 7947d3e | 2016-07-05 15:23:12 +0300 | [diff] [blame] | 1601 | if (mvm->scan_status & IWL_MVM_SCAN_REGULAR) { |
| 1602 | struct cfg80211_scan_info info = { |
| 1603 | .aborted = true, |
| 1604 | }; |
| 1605 | |
| 1606 | ieee80211_scan_completed(mvm->hw, &info); |
| 1607 | } |
Luciano Coelho | 9af91f4 | 2015-02-10 10:42:26 +0200 | [diff] [blame] | 1608 | |
| 1609 | /* Sched scan will be restarted by mac80211 in |
| 1610 | * restart_hw, so do not report if FW is about to be |
| 1611 | * restarted. |
| 1612 | */ |
Luca Coelho | a339e91 | 2016-02-02 22:58:46 +0200 | [diff] [blame] | 1613 | if ((mvm->scan_status & IWL_MVM_SCAN_SCHED) && |
| 1614 | !mvm->restart_fw) { |
Luciano Coelho | 9af91f4 | 2015-02-10 10:42:26 +0200 | [diff] [blame] | 1615 | ieee80211_sched_scan_stopped(mvm->hw); |
Luca Coelho | a339e91 | 2016-02-02 22:58:46 +0200 | [diff] [blame] | 1616 | mvm->sched_scan_pass_all = SCHED_SCAN_PASS_ALL_DISABLED; |
| 1617 | } |
David Spinadel | 4ffb365 | 2015-03-10 10:06:02 +0200 | [diff] [blame] | 1618 | } |
| 1619 | } |
Luciano Coelho | dfbf156 | 2015-05-05 11:21:34 +0300 | [diff] [blame] | 1620 | |
Luciano Coelho | c7d4248 | 2015-05-07 16:00:26 +0300 | [diff] [blame] | 1621 | int iwl_mvm_scan_stop(struct iwl_mvm *mvm, int type, bool notify) |
Luciano Coelho | dfbf156 | 2015-05-05 11:21:34 +0300 | [diff] [blame] | 1622 | { |
| 1623 | int ret; |
| 1624 | |
Luciano Coelho | c7d4248 | 2015-05-07 16:00:26 +0300 | [diff] [blame] | 1625 | if (!(mvm->scan_status & type)) |
Luciano Coelho | dfbf156 | 2015-05-05 11:21:34 +0300 | [diff] [blame] | 1626 | return 0; |
| 1627 | |
| 1628 | if (iwl_mvm_is_radio_killed(mvm)) { |
| 1629 | ret = 0; |
| 1630 | goto out; |
| 1631 | } |
| 1632 | |
Luciano Coelho | c7d4248 | 2015-05-07 16:00:26 +0300 | [diff] [blame] | 1633 | ret = iwl_mvm_scan_stop_wait(mvm, type); |
Luciano Coelho | dfbf156 | 2015-05-05 11:21:34 +0300 | [diff] [blame] | 1634 | if (!ret) |
Luciano Coelho | c7d4248 | 2015-05-07 16:00:26 +0300 | [diff] [blame] | 1635 | mvm->scan_status |= type << IWL_MVM_SCAN_STOPPING_SHIFT; |
Luciano Coelho | dfbf156 | 2015-05-05 11:21:34 +0300 | [diff] [blame] | 1636 | out: |
| 1637 | /* Clear the scan status so the next scan requests will |
| 1638 | * succeed and mark the scan as stopping, so that the Rx |
| 1639 | * handler doesn't do anything, as the scan was stopped from |
Luciano Coelho | c7d4248 | 2015-05-07 16:00:26 +0300 | [diff] [blame] | 1640 | * above. |
Luciano Coelho | dfbf156 | 2015-05-05 11:21:34 +0300 | [diff] [blame] | 1641 | */ |
Luciano Coelho | c7d4248 | 2015-05-07 16:00:26 +0300 | [diff] [blame] | 1642 | mvm->scan_status &= ~type; |
Luciano Coelho | dfbf156 | 2015-05-05 11:21:34 +0300 | [diff] [blame] | 1643 | |
Luciano Coelho | c7d4248 | 2015-05-07 16:00:26 +0300 | [diff] [blame] | 1644 | if (type == IWL_MVM_SCAN_REGULAR) { |
| 1645 | /* Since the rx handler won't do anything now, we have |
| 1646 | * to release the scan reference here. |
| 1647 | */ |
| 1648 | iwl_mvm_unref(mvm, IWL_MVM_REF_SCAN); |
Luca Coelho | 69e0464 | 2016-05-03 12:18:33 +0300 | [diff] [blame] | 1649 | cancel_delayed_work(&mvm->scan_timeout_dwork); |
Avraham Stern | 7947d3e | 2016-07-05 15:23:12 +0300 | [diff] [blame] | 1650 | if (notify) { |
| 1651 | struct cfg80211_scan_info info = { |
| 1652 | .aborted = true, |
| 1653 | }; |
| 1654 | |
| 1655 | ieee80211_scan_completed(mvm->hw, &info); |
| 1656 | } |
Luciano Coelho | c7d4248 | 2015-05-07 16:00:26 +0300 | [diff] [blame] | 1657 | } else if (notify) { |
Luciano Coelho | dfbf156 | 2015-05-05 11:21:34 +0300 | [diff] [blame] | 1658 | ieee80211_sched_scan_stopped(mvm->hw); |
Luca Coelho | a339e91 | 2016-02-02 22:58:46 +0200 | [diff] [blame] | 1659 | mvm->sched_scan_pass_all = SCHED_SCAN_PASS_ALL_DISABLED; |
Luciano Coelho | c7d4248 | 2015-05-07 16:00:26 +0300 | [diff] [blame] | 1660 | } |
Luciano Coelho | dfbf156 | 2015-05-05 11:21:34 +0300 | [diff] [blame] | 1661 | |
| 1662 | return ret; |
| 1663 | } |