| /****************************************************************************** |
| * |
| * This file is provided under a dual BSD/GPLv2 license. When using or |
| * redistributing this file, you may do so under either license. |
| * |
| * GPL LICENSE SUMMARY |
| * |
| * Copyright(c) 2012 - 2014 Intel Corporation. All rights reserved. |
| * Copyright(c) 2013 - 2015 Intel Mobile Communications GmbH |
| * Copyright(c) 2016 - 2017 Intel Deutschland GmbH |
| * Copyright(c) 2018 - 2019 Intel Corporation |
| * |
| * This program is free software; you can redistribute it and/or modify |
| * it under the terms of version 2 of the GNU General Public License as |
| * published by the Free Software Foundation. |
| * |
| * This program is distributed in the hope that it will be useful, but |
| * WITHOUT ANY WARRANTY; without even the implied warranty of |
| * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU |
| * General Public License for more details. |
| * |
| * The full GNU General Public License is included in this distribution |
| * in the file called COPYING. |
| * |
| * Contact Information: |
| * Intel Linux Wireless <linuxwifi@intel.com> |
| * Intel Corporation, 5200 N.E. Elam Young Parkway, Hillsboro, OR 97124-6497 |
| * |
| * BSD LICENSE |
| * |
| * Copyright(c) 2012 - 2014 Intel Corporation. All rights reserved. |
| * Copyright(c) 2013 - 2015 Intel Mobile Communications GmbH |
| * Copyright(c) 2016 - 2017 Intel Deutschland GmbH |
| * Copyright(c) 2018 - 2019 Intel Corporation |
| * All rights reserved. |
| * |
| * Redistribution and use in source and binary forms, with or without |
| * modification, are permitted provided that the following conditions |
| * are met: |
| * |
| * * Redistributions of source code must retain the above copyright |
| * notice, this list of conditions and the following disclaimer. |
| * * Redistributions in binary form must reproduce the above copyright |
| * notice, this list of conditions and the following disclaimer in |
| * the documentation and/or other materials provided with the |
| * distribution. |
| * * Neither the name Intel Corporation nor the names of its |
| * contributors may be used to endorse or promote products derived |
| * from this software without specific prior written permission. |
| * |
| * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS |
| * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT |
| * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR |
| * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT |
| * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, |
| * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT |
| * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, |
| * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY |
| * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT |
| * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE |
| * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. |
| * |
| *****************************************************************************/ |
| |
| #include <linux/etherdevice.h> |
| #include <net/mac80211.h> |
| |
| #include "mvm.h" |
| #include "fw/api/scan.h" |
| #include "iwl-io.h" |
| |
| #define IWL_DENSE_EBS_SCAN_RATIO 5 |
| #define IWL_SPARSE_EBS_SCAN_RATIO 1 |
| |
| #define IWL_SCAN_DWELL_ACTIVE 10 |
| #define IWL_SCAN_DWELL_PASSIVE 110 |
| #define IWL_SCAN_DWELL_FRAGMENTED 44 |
| #define IWL_SCAN_DWELL_EXTENDED 90 |
| #define IWL_SCAN_NUM_OF_FRAGS 3 |
| #define IWL_SCAN_LAST_2_4_CHN 14 |
| |
| /* adaptive dwell max budget time [TU] for full scan */ |
| #define IWL_SCAN_ADWELL_MAX_BUDGET_FULL_SCAN 300 |
| /* adaptive dwell max budget time [TU] for directed scan */ |
| #define IWL_SCAN_ADWELL_MAX_BUDGET_DIRECTED_SCAN 100 |
| /* adaptive dwell default high band APs number */ |
| #define IWL_SCAN_ADWELL_DEFAULT_HB_N_APS 8 |
| /* adaptive dwell default low band APs number */ |
| #define IWL_SCAN_ADWELL_DEFAULT_LB_N_APS 2 |
| /* adaptive dwell default APs number in social channels (1, 6, 11) */ |
| #define IWL_SCAN_ADWELL_DEFAULT_N_APS_SOCIAL 10 |
| /* number of scan channels */ |
| #define IWL_SCAN_NUM_CHANNELS 112 |
| /* adaptive dwell default number of APs override */ |
| #define IWL_SCAN_ADWELL_DEFAULT_N_APS_OVERRIDE 10 |
| |
| struct iwl_mvm_scan_timing_params { |
| u32 suspend_time; |
| u32 max_out_time; |
| }; |
| |
| static struct iwl_mvm_scan_timing_params scan_timing[] = { |
| [IWL_SCAN_TYPE_UNASSOC] = { |
| .suspend_time = 0, |
| .max_out_time = 0, |
| }, |
| [IWL_SCAN_TYPE_WILD] = { |
| .suspend_time = 30, |
| .max_out_time = 120, |
| }, |
| [IWL_SCAN_TYPE_MILD] = { |
| .suspend_time = 120, |
| .max_out_time = 120, |
| }, |
| [IWL_SCAN_TYPE_FRAGMENTED] = { |
| .suspend_time = 95, |
| .max_out_time = 44, |
| }, |
| [IWL_SCAN_TYPE_FAST_BALANCE] = { |
| .suspend_time = 30, |
| .max_out_time = 37, |
| }, |
| }; |
| |
| struct iwl_mvm_scan_params { |
| /* For CDB this is low band scan type, for non-CDB - type. */ |
| enum iwl_mvm_scan_type type; |
| enum iwl_mvm_scan_type hb_type; |
| u32 n_channels; |
| u16 delay; |
| int n_ssids; |
| struct cfg80211_ssid *ssids; |
| struct ieee80211_channel **channels; |
| u32 flags; |
| u8 *mac_addr; |
| u8 *mac_addr_mask; |
| bool no_cck; |
| bool pass_all; |
| int n_match_sets; |
| struct iwl_scan_probe_req preq; |
| struct cfg80211_match_set *match_sets; |
| int n_scan_plans; |
| struct cfg80211_sched_scan_plan *scan_plans; |
| u32 measurement_dwell; |
| }; |
| |
| static inline void *iwl_mvm_get_scan_req_umac_data(struct iwl_mvm *mvm) |
| { |
| struct iwl_scan_req_umac *cmd = mvm->scan_cmd; |
| |
| if (iwl_mvm_is_adaptive_dwell_v2_supported(mvm)) |
| return (void *)&cmd->v8.data; |
| |
| if (iwl_mvm_is_adaptive_dwell_supported(mvm)) |
| return (void *)&cmd->v7.data; |
| |
| if (iwl_mvm_cdb_scan_api(mvm)) |
| return (void *)&cmd->v6.data; |
| |
| return (void *)&cmd->v1.data; |
| } |
| |
| static inline struct iwl_scan_umac_chan_param * |
| iwl_mvm_get_scan_req_umac_channel(struct iwl_mvm *mvm) |
| { |
| struct iwl_scan_req_umac *cmd = mvm->scan_cmd; |
| |
| if (iwl_mvm_is_adaptive_dwell_v2_supported(mvm)) |
| return &cmd->v8.channel; |
| |
| if (iwl_mvm_is_adaptive_dwell_supported(mvm)) |
| return &cmd->v7.channel; |
| |
| if (iwl_mvm_cdb_scan_api(mvm)) |
| return &cmd->v6.channel; |
| |
| return &cmd->v1.channel; |
| } |
| |
| static u8 iwl_mvm_scan_rx_ant(struct iwl_mvm *mvm) |
| { |
| if (mvm->scan_rx_ant != ANT_NONE) |
| return mvm->scan_rx_ant; |
| return iwl_mvm_get_valid_rx_ant(mvm); |
| } |
| |
| static inline __le16 iwl_mvm_scan_rx_chain(struct iwl_mvm *mvm) |
| { |
| u16 rx_chain; |
| u8 rx_ant; |
| |
| rx_ant = iwl_mvm_scan_rx_ant(mvm); |
| rx_chain = rx_ant << PHY_RX_CHAIN_VALID_POS; |
| rx_chain |= rx_ant << PHY_RX_CHAIN_FORCE_MIMO_SEL_POS; |
| rx_chain |= rx_ant << PHY_RX_CHAIN_FORCE_SEL_POS; |
| rx_chain |= 0x1 << PHY_RX_CHAIN_DRIVER_FORCE_POS; |
| return cpu_to_le16(rx_chain); |
| } |
| |
| static inline __le32 |
| iwl_mvm_scan_rate_n_flags(struct iwl_mvm *mvm, enum nl80211_band band, |
| bool no_cck) |
| { |
| u32 tx_ant; |
| |
| iwl_mvm_toggle_tx_ant(mvm, &mvm->scan_last_antenna_idx); |
| tx_ant = BIT(mvm->scan_last_antenna_idx) << RATE_MCS_ANT_POS; |
| |
| if (band == NL80211_BAND_2GHZ && !no_cck) |
| return cpu_to_le32(IWL_RATE_1M_PLCP | RATE_MCS_CCK_MSK | |
| tx_ant); |
| else |
| return cpu_to_le32(IWL_RATE_6M_PLCP | tx_ant); |
| } |
| |
| static void iwl_mvm_scan_condition_iterator(void *data, u8 *mac, |
| struct ieee80211_vif *vif) |
| { |
| struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif); |
| int *global_cnt = data; |
| |
| if (vif->type != NL80211_IFTYPE_P2P_DEVICE && mvmvif->phy_ctxt && |
| mvmvif->phy_ctxt->id < NUM_PHY_CTX) |
| *global_cnt += 1; |
| } |
| |
| static enum iwl_mvm_traffic_load iwl_mvm_get_traffic_load(struct iwl_mvm *mvm) |
| { |
| return mvm->tcm.result.global_load; |
| } |
| |
| static enum iwl_mvm_traffic_load |
| iwl_mvm_get_traffic_load_band(struct iwl_mvm *mvm, enum nl80211_band band) |
| { |
| return mvm->tcm.result.band_load[band]; |
| } |
| |
| struct iwl_is_dcm_with_go_iterator_data { |
| struct ieee80211_vif *current_vif; |
| bool is_dcm_with_p2p_go; |
| }; |
| |
| static void iwl_mvm_is_dcm_with_go_iterator(void *_data, u8 *mac, |
| struct ieee80211_vif *vif) |
| { |
| struct iwl_is_dcm_with_go_iterator_data *data = _data; |
| struct iwl_mvm_vif *other_mvmvif = iwl_mvm_vif_from_mac80211(vif); |
| struct iwl_mvm_vif *curr_mvmvif = |
| iwl_mvm_vif_from_mac80211(data->current_vif); |
| |
| /* exclude the given vif */ |
| if (vif == data->current_vif) |
| return; |
| |
| if (vif->type == NL80211_IFTYPE_AP && vif->p2p && |
| other_mvmvif->phy_ctxt && curr_mvmvif->phy_ctxt && |
| other_mvmvif->phy_ctxt->id != curr_mvmvif->phy_ctxt->id) |
| data->is_dcm_with_p2p_go = true; |
| } |
| |
| static enum |
| iwl_mvm_scan_type _iwl_mvm_get_scan_type(struct iwl_mvm *mvm, |
| struct ieee80211_vif *vif, |
| enum iwl_mvm_traffic_load load, |
| bool low_latency) |
| { |
| int global_cnt = 0; |
| |
| ieee80211_iterate_active_interfaces_atomic(mvm->hw, |
| IEEE80211_IFACE_ITER_NORMAL, |
| iwl_mvm_scan_condition_iterator, |
| &global_cnt); |
| if (!global_cnt) |
| return IWL_SCAN_TYPE_UNASSOC; |
| |
| if (fw_has_api(&mvm->fw->ucode_capa, |
| IWL_UCODE_TLV_API_FRAGMENTED_SCAN)) { |
| if ((load == IWL_MVM_TRAFFIC_HIGH || low_latency) && |
| (!vif || vif->type != NL80211_IFTYPE_P2P_DEVICE)) |
| return IWL_SCAN_TYPE_FRAGMENTED; |
| |
| /* in case of DCM with GO where BSS DTIM interval < 220msec |
| * set all scan requests as fast-balance scan |
| * */ |
| if (vif && vif->type == NL80211_IFTYPE_STATION && |
| vif->bss_conf.dtim_period < 220) { |
| struct iwl_is_dcm_with_go_iterator_data data = { |
| .current_vif = vif, |
| .is_dcm_with_p2p_go = false, |
| }; |
| |
| ieee80211_iterate_active_interfaces_atomic(mvm->hw, |
| IEEE80211_IFACE_ITER_NORMAL, |
| iwl_mvm_is_dcm_with_go_iterator, |
| &data); |
| if (data.is_dcm_with_p2p_go) |
| return IWL_SCAN_TYPE_FAST_BALANCE; |
| } |
| } |
| |
| if (load >= IWL_MVM_TRAFFIC_MEDIUM || low_latency) |
| return IWL_SCAN_TYPE_MILD; |
| |
| return IWL_SCAN_TYPE_WILD; |
| } |
| |
| static enum |
| iwl_mvm_scan_type iwl_mvm_get_scan_type(struct iwl_mvm *mvm, |
| struct ieee80211_vif *vif) |
| { |
| enum iwl_mvm_traffic_load load; |
| bool low_latency; |
| |
| load = iwl_mvm_get_traffic_load(mvm); |
| low_latency = iwl_mvm_low_latency(mvm); |
| |
| return _iwl_mvm_get_scan_type(mvm, vif, load, low_latency); |
| } |
| |
| static enum |
| iwl_mvm_scan_type iwl_mvm_get_scan_type_band(struct iwl_mvm *mvm, |
| struct ieee80211_vif *vif, |
| enum nl80211_band band) |
| { |
| enum iwl_mvm_traffic_load load; |
| bool low_latency; |
| |
| load = iwl_mvm_get_traffic_load_band(mvm, band); |
| low_latency = iwl_mvm_low_latency_band(mvm, band); |
| |
| return _iwl_mvm_get_scan_type(mvm, vif, load, low_latency); |
| } |
| |
| static int |
| iwl_mvm_get_measurement_dwell(struct iwl_mvm *mvm, |
| struct cfg80211_scan_request *req, |
| struct iwl_mvm_scan_params *params) |
| { |
| u32 duration = scan_timing[params->type].max_out_time; |
| |
| if (!req->duration) |
| return 0; |
| |
| if (iwl_mvm_is_cdb_supported(mvm)) { |
| u32 hb_time = scan_timing[params->hb_type].max_out_time; |
| |
| duration = min_t(u32, duration, hb_time); |
| } |
| |
| if (req->duration_mandatory && req->duration > duration) { |
| IWL_DEBUG_SCAN(mvm, |
| "Measurement scan - too long dwell %hu (max out time %u)\n", |
| req->duration, |
| duration); |
| return -EOPNOTSUPP; |
| } |
| |
| return min_t(u32, (u32)req->duration, duration); |
| } |
| |
| static inline bool iwl_mvm_rrm_scan_needed(struct iwl_mvm *mvm) |
| { |
| /* require rrm scan whenever the fw supports it */ |
| return fw_has_capa(&mvm->fw->ucode_capa, |
| IWL_UCODE_TLV_CAPA_DS_PARAM_SET_IE_SUPPORT); |
| } |
| |
| static int iwl_mvm_max_scan_ie_fw_cmd_room(struct iwl_mvm *mvm) |
| { |
| int max_probe_len; |
| |
| max_probe_len = SCAN_OFFLOAD_PROBE_REQ_SIZE; |
| |
| /* we create the 802.11 header and SSID element */ |
| max_probe_len -= 24 + 2; |
| |
| /* DS parameter set element is added on 2.4GHZ band if required */ |
| if (iwl_mvm_rrm_scan_needed(mvm)) |
| max_probe_len -= 3; |
| |
| return max_probe_len; |
| } |
| |
| int iwl_mvm_max_scan_ie_len(struct iwl_mvm *mvm) |
| { |
| int max_ie_len = iwl_mvm_max_scan_ie_fw_cmd_room(mvm); |
| |
| /* TODO: [BUG] This function should return the maximum allowed size of |
| * scan IEs, however the LMAC scan api contains both 2GHZ and 5GHZ IEs |
| * in the same command. So the correct implementation of this function |
| * is just iwl_mvm_max_scan_ie_fw_cmd_room() / 2. Currently the scan |
| * command has only 512 bytes and it would leave us with about 240 |
| * bytes for scan IEs, which is clearly not enough. So meanwhile |
| * we will report an incorrect value. This may result in a failure to |
| * issue a scan in unified_scan_lmac and unified_sched_scan_lmac |
| * functions with -ENOBUFS, if a large enough probe will be provided. |
| */ |
| return max_ie_len; |
| } |
| |
| void iwl_mvm_rx_lmac_scan_iter_complete_notif(struct iwl_mvm *mvm, |
| struct iwl_rx_cmd_buffer *rxb) |
| { |
| struct iwl_rx_packet *pkt = rxb_addr(rxb); |
| struct iwl_lmac_scan_complete_notif *notif = (void *)pkt->data; |
| |
| IWL_DEBUG_SCAN(mvm, |
| "Scan offload iteration complete: status=0x%x scanned channels=%d\n", |
| notif->status, notif->scanned_channels); |
| |
| if (mvm->sched_scan_pass_all == SCHED_SCAN_PASS_ALL_FOUND) { |
| IWL_DEBUG_SCAN(mvm, "Pass all scheduled scan results found\n"); |
| ieee80211_sched_scan_results(mvm->hw); |
| mvm->sched_scan_pass_all = SCHED_SCAN_PASS_ALL_ENABLED; |
| } |
| } |
| |
| void iwl_mvm_rx_scan_match_found(struct iwl_mvm *mvm, |
| struct iwl_rx_cmd_buffer *rxb) |
| { |
| IWL_DEBUG_SCAN(mvm, "Scheduled scan results\n"); |
| ieee80211_sched_scan_results(mvm->hw); |
| } |
| |
| static const char *iwl_mvm_ebs_status_str(enum iwl_scan_ebs_status status) |
| { |
| switch (status) { |
| case IWL_SCAN_EBS_SUCCESS: |
| return "successful"; |
| case IWL_SCAN_EBS_INACTIVE: |
| return "inactive"; |
| case IWL_SCAN_EBS_FAILED: |
| case IWL_SCAN_EBS_CHAN_NOT_FOUND: |
| default: |
| return "failed"; |
| } |
| } |
| |
| void iwl_mvm_rx_lmac_scan_complete_notif(struct iwl_mvm *mvm, |
| struct iwl_rx_cmd_buffer *rxb) |
| { |
| struct iwl_rx_packet *pkt = rxb_addr(rxb); |
| struct iwl_periodic_scan_complete *scan_notif = (void *)pkt->data; |
| bool aborted = (scan_notif->status == IWL_SCAN_OFFLOAD_ABORTED); |
| |
| /* If this happens, the firmware has mistakenly sent an LMAC |
| * notification during UMAC scans -- warn and ignore it. |
| */ |
| if (WARN_ON_ONCE(fw_has_capa(&mvm->fw->ucode_capa, |
| IWL_UCODE_TLV_CAPA_UMAC_SCAN))) |
| return; |
| |
| /* scan status must be locked for proper checking */ |
| lockdep_assert_held(&mvm->mutex); |
| |
| /* We first check if we were stopping a scan, in which case we |
| * just clear the stopping flag. Then we check if it was a |
| * firmware initiated stop, in which case we need to inform |
| * mac80211. |
| * Note that we can have a stopping and a running scan |
| * simultaneously, but we can't have two different types of |
| * scans stopping or running at the same time (since LMAC |
| * doesn't support it). |
| */ |
| |
| if (mvm->scan_status & IWL_MVM_SCAN_STOPPING_SCHED) { |
| WARN_ON_ONCE(mvm->scan_status & IWL_MVM_SCAN_STOPPING_REGULAR); |
| |
| IWL_DEBUG_SCAN(mvm, "Scheduled scan %s, EBS status %s\n", |
| aborted ? "aborted" : "completed", |
| iwl_mvm_ebs_status_str(scan_notif->ebs_status)); |
| IWL_DEBUG_SCAN(mvm, |
| "Last line %d, Last iteration %d, Time after last iteration %d\n", |
| scan_notif->last_schedule_line, |
| scan_notif->last_schedule_iteration, |
| __le32_to_cpu(scan_notif->time_after_last_iter)); |
| |
| mvm->scan_status &= ~IWL_MVM_SCAN_STOPPING_SCHED; |
| } else if (mvm->scan_status & IWL_MVM_SCAN_STOPPING_REGULAR) { |
| IWL_DEBUG_SCAN(mvm, "Regular scan %s, EBS status %s\n", |
| aborted ? "aborted" : "completed", |
| iwl_mvm_ebs_status_str(scan_notif->ebs_status)); |
| |
| mvm->scan_status &= ~IWL_MVM_SCAN_STOPPING_REGULAR; |
| } else if (mvm->scan_status & IWL_MVM_SCAN_SCHED) { |
| WARN_ON_ONCE(mvm->scan_status & IWL_MVM_SCAN_REGULAR); |
| |
| IWL_DEBUG_SCAN(mvm, "Scheduled scan %s, EBS status %s\n", |
| aborted ? "aborted" : "completed", |
| iwl_mvm_ebs_status_str(scan_notif->ebs_status)); |
| IWL_DEBUG_SCAN(mvm, |
| "Last line %d, Last iteration %d, Time after last iteration %d (FW)\n", |
| scan_notif->last_schedule_line, |
| scan_notif->last_schedule_iteration, |
| __le32_to_cpu(scan_notif->time_after_last_iter)); |
| |
| mvm->scan_status &= ~IWL_MVM_SCAN_SCHED; |
| ieee80211_sched_scan_stopped(mvm->hw); |
| mvm->sched_scan_pass_all = SCHED_SCAN_PASS_ALL_DISABLED; |
| } else if (mvm->scan_status & IWL_MVM_SCAN_REGULAR) { |
| struct cfg80211_scan_info info = { |
| .aborted = aborted, |
| }; |
| |
| IWL_DEBUG_SCAN(mvm, "Regular scan %s, EBS status %s (FW)\n", |
| aborted ? "aborted" : "completed", |
| iwl_mvm_ebs_status_str(scan_notif->ebs_status)); |
| |
| mvm->scan_status &= ~IWL_MVM_SCAN_REGULAR; |
| ieee80211_scan_completed(mvm->hw, &info); |
| cancel_delayed_work(&mvm->scan_timeout_dwork); |
| iwl_mvm_resume_tcm(mvm); |
| } else { |
| IWL_ERR(mvm, |
| "got scan complete notification but no scan is running\n"); |
| } |
| |
| mvm->last_ebs_successful = |
| scan_notif->ebs_status == IWL_SCAN_EBS_SUCCESS || |
| scan_notif->ebs_status == IWL_SCAN_EBS_INACTIVE; |
| } |
| |
| static int iwl_ssid_exist(u8 *ssid, u8 ssid_len, struct iwl_ssid_ie *ssid_list) |
| { |
| int i; |
| |
| for (i = 0; i < PROBE_OPTION_MAX; i++) { |
| if (!ssid_list[i].len) |
| break; |
| if (ssid_list[i].len == ssid_len && |
| !memcmp(ssid_list->ssid, ssid, ssid_len)) |
| return i; |
| } |
| return -1; |
| } |
| |
| /* We insert the SSIDs in an inverted order, because the FW will |
| * invert it back. |
| */ |
| static void iwl_scan_build_ssids(struct iwl_mvm_scan_params *params, |
| struct iwl_ssid_ie *ssids, |
| u32 *ssid_bitmap) |
| { |
| int i, j; |
| int index; |
| u32 tmp_bitmap = 0; |
| |
| /* |
| * copy SSIDs from match list. |
| * iwl_config_sched_scan_profiles() uses the order of these ssids to |
| * config match list. |
| */ |
| for (i = 0, j = params->n_match_sets - 1; |
| j >= 0 && i < PROBE_OPTION_MAX; |
| i++, j--) { |
| /* skip empty SSID matchsets */ |
| if (!params->match_sets[j].ssid.ssid_len) |
| continue; |
| ssids[i].id = WLAN_EID_SSID; |
| ssids[i].len = params->match_sets[j].ssid.ssid_len; |
| memcpy(ssids[i].ssid, params->match_sets[j].ssid.ssid, |
| ssids[i].len); |
| } |
| |
| /* add SSIDs from scan SSID list */ |
| for (j = params->n_ssids - 1; |
| j >= 0 && i < PROBE_OPTION_MAX; |
| i++, j--) { |
| index = iwl_ssid_exist(params->ssids[j].ssid, |
| params->ssids[j].ssid_len, |
| ssids); |
| if (index < 0) { |
| ssids[i].id = WLAN_EID_SSID; |
| ssids[i].len = params->ssids[j].ssid_len; |
| memcpy(ssids[i].ssid, params->ssids[j].ssid, |
| ssids[i].len); |
| tmp_bitmap |= BIT(i); |
| } else { |
| tmp_bitmap |= BIT(index); |
| } |
| } |
| if (ssid_bitmap) |
| *ssid_bitmap = tmp_bitmap; |
| } |
| |
| static int |
| iwl_mvm_config_sched_scan_profiles(struct iwl_mvm *mvm, |
| struct cfg80211_sched_scan_request *req) |
| { |
| struct iwl_scan_offload_profile *profile; |
| struct iwl_scan_offload_profile_cfg *profile_cfg; |
| struct iwl_scan_offload_blacklist *blacklist; |
| struct iwl_host_cmd cmd = { |
| .id = SCAN_OFFLOAD_UPDATE_PROFILES_CMD, |
| .len[1] = sizeof(*profile_cfg), |
| .dataflags[0] = IWL_HCMD_DFL_NOCOPY, |
| .dataflags[1] = IWL_HCMD_DFL_NOCOPY, |
| }; |
| int blacklist_len; |
| int i; |
| int ret; |
| |
| if (WARN_ON(req->n_match_sets > IWL_SCAN_MAX_PROFILES)) |
| return -EIO; |
| |
| if (mvm->fw->ucode_capa.flags & IWL_UCODE_TLV_FLAGS_SHORT_BL) |
| blacklist_len = IWL_SCAN_SHORT_BLACKLIST_LEN; |
| else |
| blacklist_len = IWL_SCAN_MAX_BLACKLIST_LEN; |
| |
| blacklist = kcalloc(blacklist_len, sizeof(*blacklist), GFP_KERNEL); |
| if (!blacklist) |
| return -ENOMEM; |
| |
| profile_cfg = kzalloc(sizeof(*profile_cfg), GFP_KERNEL); |
| if (!profile_cfg) { |
| ret = -ENOMEM; |
| goto free_blacklist; |
| } |
| |
| cmd.data[0] = blacklist; |
| cmd.len[0] = sizeof(*blacklist) * blacklist_len; |
| cmd.data[1] = profile_cfg; |
| |
| /* No blacklist configuration */ |
| |
| profile_cfg->num_profiles = req->n_match_sets; |
| profile_cfg->active_clients = SCAN_CLIENT_SCHED_SCAN; |
| profile_cfg->pass_match = SCAN_CLIENT_SCHED_SCAN; |
| profile_cfg->match_notify = SCAN_CLIENT_SCHED_SCAN; |
| if (!req->n_match_sets || !req->match_sets[0].ssid.ssid_len) |
| profile_cfg->any_beacon_notify = SCAN_CLIENT_SCHED_SCAN; |
| |
| for (i = 0; i < req->n_match_sets; i++) { |
| profile = &profile_cfg->profiles[i]; |
| profile->ssid_index = i; |
| /* Support any cipher and auth algorithm */ |
| profile->unicast_cipher = 0xff; |
| profile->auth_alg = 0xff; |
| profile->network_type = IWL_NETWORK_TYPE_ANY; |
| profile->band_selection = IWL_SCAN_OFFLOAD_SELECT_ANY; |
| profile->client_bitmap = SCAN_CLIENT_SCHED_SCAN; |
| } |
| |
| IWL_DEBUG_SCAN(mvm, "Sending scheduled scan profile config\n"); |
| |
| ret = iwl_mvm_send_cmd(mvm, &cmd); |
| kfree(profile_cfg); |
| free_blacklist: |
| kfree(blacklist); |
| |
| return ret; |
| } |
| |
| static bool iwl_mvm_scan_pass_all(struct iwl_mvm *mvm, |
| struct cfg80211_sched_scan_request *req) |
| { |
| if (req->n_match_sets && req->match_sets[0].ssid.ssid_len) { |
| IWL_DEBUG_SCAN(mvm, |
| "Sending scheduled scan with filtering, n_match_sets %d\n", |
| req->n_match_sets); |
| mvm->sched_scan_pass_all = SCHED_SCAN_PASS_ALL_DISABLED; |
| return false; |
| } |
| |
| IWL_DEBUG_SCAN(mvm, "Sending Scheduled scan without filtering\n"); |
| |
| mvm->sched_scan_pass_all = SCHED_SCAN_PASS_ALL_ENABLED; |
| return true; |
| } |
| |
| static int iwl_mvm_lmac_scan_abort(struct iwl_mvm *mvm) |
| { |
| int ret; |
| struct iwl_host_cmd cmd = { |
| .id = SCAN_OFFLOAD_ABORT_CMD, |
| }; |
| u32 status = CAN_ABORT_STATUS; |
| |
| ret = iwl_mvm_send_cmd_status(mvm, &cmd, &status); |
| if (ret) |
| return ret; |
| |
| if (status != CAN_ABORT_STATUS) { |
| /* |
| * The scan abort will return 1 for success or |
| * 2 for "failure". A failure condition can be |
| * due to simply not being in an active scan which |
| * can occur if we send the scan abort before the |
| * microcode has notified us that a scan is completed. |
| */ |
| IWL_DEBUG_SCAN(mvm, "SCAN OFFLOAD ABORT ret %d.\n", status); |
| ret = -ENOENT; |
| } |
| |
| return ret; |
| } |
| |
| static void iwl_mvm_scan_fill_tx_cmd(struct iwl_mvm *mvm, |
| struct iwl_scan_req_tx_cmd *tx_cmd, |
| bool no_cck) |
| { |
| tx_cmd[0].tx_flags = cpu_to_le32(TX_CMD_FLG_SEQ_CTL | |
| TX_CMD_FLG_BT_DIS); |
| tx_cmd[0].rate_n_flags = iwl_mvm_scan_rate_n_flags(mvm, |
| NL80211_BAND_2GHZ, |
| no_cck); |
| tx_cmd[0].sta_id = mvm->aux_sta.sta_id; |
| |
| tx_cmd[1].tx_flags = cpu_to_le32(TX_CMD_FLG_SEQ_CTL | |
| TX_CMD_FLG_BT_DIS); |
| tx_cmd[1].rate_n_flags = iwl_mvm_scan_rate_n_flags(mvm, |
| NL80211_BAND_5GHZ, |
| no_cck); |
| tx_cmd[1].sta_id = mvm->aux_sta.sta_id; |
| } |
| |
| static void |
| iwl_mvm_lmac_scan_cfg_channels(struct iwl_mvm *mvm, |
| struct ieee80211_channel **channels, |
| int n_channels, u32 ssid_bitmap, |
| struct iwl_scan_req_lmac *cmd) |
| { |
| struct iwl_scan_channel_cfg_lmac *channel_cfg = (void *)&cmd->data; |
| int i; |
| |
| for (i = 0; i < n_channels; i++) { |
| channel_cfg[i].channel_num = |
| cpu_to_le16(channels[i]->hw_value); |
| channel_cfg[i].iter_count = cpu_to_le16(1); |
| channel_cfg[i].iter_interval = 0; |
| channel_cfg[i].flags = |
| cpu_to_le32(IWL_UNIFIED_SCAN_CHANNEL_PARTIAL | |
| ssid_bitmap); |
| } |
| } |
| |
| static u8 *iwl_mvm_copy_and_insert_ds_elem(struct iwl_mvm *mvm, const u8 *ies, |
| size_t len, u8 *const pos) |
| { |
| static const u8 before_ds_params[] = { |
| WLAN_EID_SSID, |
| WLAN_EID_SUPP_RATES, |
| WLAN_EID_REQUEST, |
| WLAN_EID_EXT_SUPP_RATES, |
| }; |
| size_t offs; |
| u8 *newpos = pos; |
| |
| if (!iwl_mvm_rrm_scan_needed(mvm)) { |
| memcpy(newpos, ies, len); |
| return newpos + len; |
| } |
| |
| offs = ieee80211_ie_split(ies, len, |
| before_ds_params, |
| ARRAY_SIZE(before_ds_params), |
| 0); |
| |
| memcpy(newpos, ies, offs); |
| newpos += offs; |
| |
| /* Add a placeholder for DS Parameter Set element */ |
| *newpos++ = WLAN_EID_DS_PARAMS; |
| *newpos++ = 1; |
| *newpos++ = 0; |
| |
| memcpy(newpos, ies + offs, len - offs); |
| newpos += len - offs; |
| |
| return newpos; |
| } |
| |
| #define WFA_TPC_IE_LEN 9 |
| |
| static void iwl_mvm_add_tpc_report_ie(u8 *pos) |
| { |
| pos[0] = WLAN_EID_VENDOR_SPECIFIC; |
| pos[1] = WFA_TPC_IE_LEN - 2; |
| pos[2] = (WLAN_OUI_MICROSOFT >> 16) & 0xff; |
| pos[3] = (WLAN_OUI_MICROSOFT >> 8) & 0xff; |
| pos[4] = WLAN_OUI_MICROSOFT & 0xff; |
| pos[5] = WLAN_OUI_TYPE_MICROSOFT_TPC; |
| pos[6] = 0; |
| /* pos[7] - tx power will be inserted by the FW */ |
| pos[7] = 0; |
| pos[8] = 0; |
| } |
| |
| static void |
| iwl_mvm_build_scan_probe(struct iwl_mvm *mvm, struct ieee80211_vif *vif, |
| struct ieee80211_scan_ies *ies, |
| struct iwl_mvm_scan_params *params) |
| { |
| struct ieee80211_mgmt *frame = (void *)params->preq.buf; |
| u8 *pos, *newpos; |
| const u8 *mac_addr = params->flags & NL80211_SCAN_FLAG_RANDOM_ADDR ? |
| params->mac_addr : NULL; |
| |
| /* |
| * Unfortunately, right now the offload scan doesn't support randomising |
| * within the firmware, so until the firmware API is ready we implement |
| * it in the driver. This means that the scan iterations won't really be |
| * random, only when it's restarted, but at least that helps a bit. |
| */ |
| if (mac_addr) |
| get_random_mask_addr(frame->sa, mac_addr, |
| params->mac_addr_mask); |
| else |
| memcpy(frame->sa, vif->addr, ETH_ALEN); |
| |
| frame->frame_control = cpu_to_le16(IEEE80211_STYPE_PROBE_REQ); |
| eth_broadcast_addr(frame->da); |
| eth_broadcast_addr(frame->bssid); |
| frame->seq_ctrl = 0; |
| |
| pos = frame->u.probe_req.variable; |
| *pos++ = WLAN_EID_SSID; |
| *pos++ = 0; |
| |
| params->preq.mac_header.offset = 0; |
| params->preq.mac_header.len = cpu_to_le16(24 + 2); |
| |
| /* Insert ds parameter set element on 2.4 GHz band */ |
| newpos = iwl_mvm_copy_and_insert_ds_elem(mvm, |
| ies->ies[NL80211_BAND_2GHZ], |
| ies->len[NL80211_BAND_2GHZ], |
| pos); |
| params->preq.band_data[0].offset = cpu_to_le16(pos - params->preq.buf); |
| params->preq.band_data[0].len = cpu_to_le16(newpos - pos); |
| pos = newpos; |
| |
| memcpy(pos, ies->ies[NL80211_BAND_5GHZ], |
| ies->len[NL80211_BAND_5GHZ]); |
| params->preq.band_data[1].offset = cpu_to_le16(pos - params->preq.buf); |
| params->preq.band_data[1].len = |
| cpu_to_le16(ies->len[NL80211_BAND_5GHZ]); |
| pos += ies->len[NL80211_BAND_5GHZ]; |
| |
| memcpy(pos, ies->common_ies, ies->common_ie_len); |
| params->preq.common_data.offset = cpu_to_le16(pos - params->preq.buf); |
| |
| if (iwl_mvm_rrm_scan_needed(mvm) && |
| !fw_has_capa(&mvm->fw->ucode_capa, |
| IWL_UCODE_TLV_CAPA_WFA_TPC_REP_IE_SUPPORT)) { |
| iwl_mvm_add_tpc_report_ie(pos + ies->common_ie_len); |
| params->preq.common_data.len = cpu_to_le16(ies->common_ie_len + |
| WFA_TPC_IE_LEN); |
| } else { |
| params->preq.common_data.len = cpu_to_le16(ies->common_ie_len); |
| } |
| } |
| |
| static void iwl_mvm_scan_lmac_dwell(struct iwl_mvm *mvm, |
| struct iwl_scan_req_lmac *cmd, |
| struct iwl_mvm_scan_params *params) |
| { |
| cmd->active_dwell = IWL_SCAN_DWELL_ACTIVE; |
| cmd->passive_dwell = IWL_SCAN_DWELL_PASSIVE; |
| cmd->fragmented_dwell = IWL_SCAN_DWELL_FRAGMENTED; |
| cmd->extended_dwell = IWL_SCAN_DWELL_EXTENDED; |
| cmd->max_out_time = cpu_to_le32(scan_timing[params->type].max_out_time); |
| cmd->suspend_time = cpu_to_le32(scan_timing[params->type].suspend_time); |
| cmd->scan_prio = cpu_to_le32(IWL_SCAN_PRIORITY_EXT_6); |
| } |
| |
| static inline bool iwl_mvm_scan_fits(struct iwl_mvm *mvm, int n_ssids, |
| struct ieee80211_scan_ies *ies, |
| int n_channels) |
| { |
| return ((n_ssids <= PROBE_OPTION_MAX) && |
| (n_channels <= mvm->fw->ucode_capa.n_scan_channels) & |
| (ies->common_ie_len + |
| ies->len[NL80211_BAND_2GHZ] + |
| ies->len[NL80211_BAND_5GHZ] <= |
| iwl_mvm_max_scan_ie_fw_cmd_room(mvm))); |
| } |
| |
| static inline bool iwl_mvm_scan_use_ebs(struct iwl_mvm *mvm, |
| struct ieee80211_vif *vif) |
| { |
| const struct iwl_ucode_capabilities *capa = &mvm->fw->ucode_capa; |
| bool low_latency; |
| |
| if (iwl_mvm_is_cdb_supported(mvm)) |
| low_latency = iwl_mvm_low_latency_band(mvm, NL80211_BAND_5GHZ); |
| else |
| low_latency = iwl_mvm_low_latency(mvm); |
| |
| /* We can only use EBS if: |
| * 1. the feature is supported; |
| * 2. the last EBS was successful; |
| * 3. if only single scan, the single scan EBS API is supported; |
| * 4. it's not a p2p find operation. |
| * 5. we are not in low latency mode, |
| * or if fragmented ebs is supported by the FW |
| */ |
| return ((capa->flags & IWL_UCODE_TLV_FLAGS_EBS_SUPPORT) && |
| mvm->last_ebs_successful && IWL_MVM_ENABLE_EBS && |
| vif->type != NL80211_IFTYPE_P2P_DEVICE && |
| (!low_latency || iwl_mvm_is_frag_ebs_supported(mvm))); |
| } |
| |
| static inline bool iwl_mvm_is_regular_scan(struct iwl_mvm_scan_params *params) |
| { |
| return params->n_scan_plans == 1 && |
| params->scan_plans[0].iterations == 1; |
| } |
| |
| static bool iwl_mvm_is_scan_fragmented(enum iwl_mvm_scan_type type) |
| { |
| return (type == IWL_SCAN_TYPE_FRAGMENTED || |
| type == IWL_SCAN_TYPE_FAST_BALANCE); |
| } |
| |
| static int iwl_mvm_scan_lmac_flags(struct iwl_mvm *mvm, |
| struct iwl_mvm_scan_params *params, |
| struct ieee80211_vif *vif) |
| { |
| int flags = 0; |
| |
| if (params->n_ssids == 0) |
| flags |= IWL_MVM_LMAC_SCAN_FLAG_PASSIVE; |
| |
| if (params->n_ssids == 1 && params->ssids[0].ssid_len != 0) |
| flags |= IWL_MVM_LMAC_SCAN_FLAG_PRE_CONNECTION; |
| |
| if (iwl_mvm_is_scan_fragmented(params->type)) |
| flags |= IWL_MVM_LMAC_SCAN_FLAG_FRAGMENTED; |
| |
| if (iwl_mvm_rrm_scan_needed(mvm) && |
| fw_has_capa(&mvm->fw->ucode_capa, |
| IWL_UCODE_TLV_CAPA_WFA_TPC_REP_IE_SUPPORT)) |
| flags |= IWL_MVM_LMAC_SCAN_FLAGS_RRM_ENABLED; |
| |
| if (params->pass_all) |
| flags |= IWL_MVM_LMAC_SCAN_FLAG_PASS_ALL; |
| else |
| flags |= IWL_MVM_LMAC_SCAN_FLAG_MATCH; |
| |
| #ifdef CONFIG_IWLWIFI_DEBUGFS |
| if (mvm->scan_iter_notif_enabled) |
| flags |= IWL_MVM_LMAC_SCAN_FLAG_ITER_COMPLETE; |
| #endif |
| |
| if (mvm->sched_scan_pass_all == SCHED_SCAN_PASS_ALL_ENABLED) |
| flags |= IWL_MVM_LMAC_SCAN_FLAG_ITER_COMPLETE; |
| |
| if (iwl_mvm_is_regular_scan(params) && |
| vif->type != NL80211_IFTYPE_P2P_DEVICE && |
| !iwl_mvm_is_scan_fragmented(params->type)) |
| flags |= IWL_MVM_LMAC_SCAN_FLAG_EXTENDED_DWELL; |
| |
| return flags; |
| } |
| |
| static void |
| iwl_mvm_scan_set_legacy_probe_req(struct iwl_scan_probe_req_v1 *p_req, |
| struct iwl_scan_probe_req *src_p_req) |
| { |
| int i; |
| |
| p_req->mac_header = src_p_req->mac_header; |
| for (i = 0; i < SCAN_NUM_BAND_PROBE_DATA_V_1; i++) |
| p_req->band_data[i] = src_p_req->band_data[i]; |
| p_req->common_data = src_p_req->common_data; |
| memcpy(p_req->buf, src_p_req->buf, sizeof(p_req->buf)); |
| } |
| |
| static int iwl_mvm_scan_lmac(struct iwl_mvm *mvm, struct ieee80211_vif *vif, |
| struct iwl_mvm_scan_params *params) |
| { |
| struct iwl_scan_req_lmac *cmd = mvm->scan_cmd; |
| struct iwl_scan_probe_req_v1 *preq = |
| (void *)(cmd->data + sizeof(struct iwl_scan_channel_cfg_lmac) * |
| mvm->fw->ucode_capa.n_scan_channels); |
| u32 ssid_bitmap = 0; |
| int i; |
| u8 band; |
| |
| if (WARN_ON(params->n_scan_plans > IWL_MAX_SCHED_SCAN_PLANS)) |
| return -EINVAL; |
| |
| iwl_mvm_scan_lmac_dwell(mvm, cmd, params); |
| |
| cmd->rx_chain_select = iwl_mvm_scan_rx_chain(mvm); |
| cmd->iter_num = cpu_to_le32(1); |
| cmd->n_channels = (u8)params->n_channels; |
| |
| cmd->delay = cpu_to_le32(params->delay); |
| |
| cmd->scan_flags = cpu_to_le32(iwl_mvm_scan_lmac_flags(mvm, params, |
| vif)); |
| |
| band = iwl_mvm_phy_band_from_nl80211(params->channels[0]->band); |
| cmd->flags = cpu_to_le32(band); |
| cmd->filter_flags = cpu_to_le32(MAC_FILTER_ACCEPT_GRP | |
| MAC_FILTER_IN_BEACON); |
| iwl_mvm_scan_fill_tx_cmd(mvm, cmd->tx_cmd, params->no_cck); |
| iwl_scan_build_ssids(params, cmd->direct_scan, &ssid_bitmap); |
| |
| /* this API uses bits 1-20 instead of 0-19 */ |
| ssid_bitmap <<= 1; |
| |
| for (i = 0; i < params->n_scan_plans; i++) { |
| struct cfg80211_sched_scan_plan *scan_plan = |
| ¶ms->scan_plans[i]; |
| |
| cmd->schedule[i].delay = |
| cpu_to_le16(scan_plan->interval); |
| cmd->schedule[i].iterations = scan_plan->iterations; |
| cmd->schedule[i].full_scan_mul = 1; |
| } |
| |
| /* |
| * If the number of iterations of the last scan plan is set to |
| * zero, it should run infinitely. However, this is not always the case. |
| * For example, when regular scan is requested the driver sets one scan |
| * plan with one iteration. |
| */ |
| if (!cmd->schedule[i - 1].iterations) |
| cmd->schedule[i - 1].iterations = 0xff; |
| |
| if (iwl_mvm_scan_use_ebs(mvm, vif)) { |
| cmd->channel_opt[0].flags = |
| cpu_to_le16(IWL_SCAN_CHANNEL_FLAG_EBS | |
| IWL_SCAN_CHANNEL_FLAG_EBS_ACCURATE | |
| IWL_SCAN_CHANNEL_FLAG_CACHE_ADD); |
| cmd->channel_opt[0].non_ebs_ratio = |
| cpu_to_le16(IWL_DENSE_EBS_SCAN_RATIO); |
| cmd->channel_opt[1].flags = |
| cpu_to_le16(IWL_SCAN_CHANNEL_FLAG_EBS | |
| IWL_SCAN_CHANNEL_FLAG_EBS_ACCURATE | |
| IWL_SCAN_CHANNEL_FLAG_CACHE_ADD); |
| cmd->channel_opt[1].non_ebs_ratio = |
| cpu_to_le16(IWL_SPARSE_EBS_SCAN_RATIO); |
| } |
| |
| iwl_mvm_lmac_scan_cfg_channels(mvm, params->channels, |
| params->n_channels, ssid_bitmap, cmd); |
| |
| iwl_mvm_scan_set_legacy_probe_req(preq, ¶ms->preq); |
| |
| return 0; |
| } |
| |
| static int rate_to_scan_rate_flag(unsigned int rate) |
| { |
| static const int rate_to_scan_rate[IWL_RATE_COUNT] = { |
| [IWL_RATE_1M_INDEX] = SCAN_CONFIG_RATE_1M, |
| [IWL_RATE_2M_INDEX] = SCAN_CONFIG_RATE_2M, |
| [IWL_RATE_5M_INDEX] = SCAN_CONFIG_RATE_5M, |
| [IWL_RATE_11M_INDEX] = SCAN_CONFIG_RATE_11M, |
| [IWL_RATE_6M_INDEX] = SCAN_CONFIG_RATE_6M, |
| [IWL_RATE_9M_INDEX] = SCAN_CONFIG_RATE_9M, |
| [IWL_RATE_12M_INDEX] = SCAN_CONFIG_RATE_12M, |
| [IWL_RATE_18M_INDEX] = SCAN_CONFIG_RATE_18M, |
| [IWL_RATE_24M_INDEX] = SCAN_CONFIG_RATE_24M, |
| [IWL_RATE_36M_INDEX] = SCAN_CONFIG_RATE_36M, |
| [IWL_RATE_48M_INDEX] = SCAN_CONFIG_RATE_48M, |
| [IWL_RATE_54M_INDEX] = SCAN_CONFIG_RATE_54M, |
| }; |
| |
| return rate_to_scan_rate[rate]; |
| } |
| |
| static __le32 iwl_mvm_scan_config_rates(struct iwl_mvm *mvm) |
| { |
| struct ieee80211_supported_band *band; |
| unsigned int rates = 0; |
| int i; |
| |
| band = &mvm->nvm_data->bands[NL80211_BAND_2GHZ]; |
| for (i = 0; i < band->n_bitrates; i++) |
| rates |= rate_to_scan_rate_flag(band->bitrates[i].hw_value); |
| band = &mvm->nvm_data->bands[NL80211_BAND_5GHZ]; |
| for (i = 0; i < band->n_bitrates; i++) |
| rates |= rate_to_scan_rate_flag(band->bitrates[i].hw_value); |
| |
| /* Set both basic rates and supported rates */ |
| rates |= SCAN_CONFIG_SUPPORTED_RATE(rates); |
| |
| return cpu_to_le32(rates); |
| } |
| |
| static void iwl_mvm_fill_scan_dwell(struct iwl_mvm *mvm, |
| struct iwl_scan_dwell *dwell) |
| { |
| dwell->active = IWL_SCAN_DWELL_ACTIVE; |
| dwell->passive = IWL_SCAN_DWELL_PASSIVE; |
| dwell->fragmented = IWL_SCAN_DWELL_FRAGMENTED; |
| dwell->extended = IWL_SCAN_DWELL_EXTENDED; |
| } |
| |
| static void iwl_mvm_fill_channels(struct iwl_mvm *mvm, u8 *channels, |
| u32 max_channels) |
| { |
| struct ieee80211_supported_band *band; |
| int i, j = 0; |
| |
| band = &mvm->nvm_data->bands[NL80211_BAND_2GHZ]; |
| for (i = 0; i < band->n_channels && j < max_channels; i++, j++) |
| channels[j] = band->channels[i].hw_value; |
| band = &mvm->nvm_data->bands[NL80211_BAND_5GHZ]; |
| for (i = 0; i < band->n_channels && j < max_channels; i++, j++) |
| channels[j] = band->channels[i].hw_value; |
| } |
| |
| static void iwl_mvm_fill_scan_config_v1(struct iwl_mvm *mvm, void *config, |
| u32 flags, u8 channel_flags, |
| u32 max_channels) |
| { |
| enum iwl_mvm_scan_type type = iwl_mvm_get_scan_type(mvm, NULL); |
| struct iwl_scan_config_v1 *cfg = config; |
| |
| cfg->flags = cpu_to_le32(flags); |
| cfg->tx_chains = cpu_to_le32(iwl_mvm_get_valid_tx_ant(mvm)); |
| cfg->rx_chains = cpu_to_le32(iwl_mvm_scan_rx_ant(mvm)); |
| cfg->legacy_rates = iwl_mvm_scan_config_rates(mvm); |
| cfg->out_of_channel_time = cpu_to_le32(scan_timing[type].max_out_time); |
| cfg->suspend_time = cpu_to_le32(scan_timing[type].suspend_time); |
| |
| iwl_mvm_fill_scan_dwell(mvm, &cfg->dwell); |
| |
| memcpy(&cfg->mac_addr, &mvm->addresses[0].addr, ETH_ALEN); |
| |
| cfg->bcast_sta_id = mvm->aux_sta.sta_id; |
| cfg->channel_flags = channel_flags; |
| |
| iwl_mvm_fill_channels(mvm, cfg->channel_array, max_channels); |
| } |
| |
| static void iwl_mvm_fill_scan_config_v2(struct iwl_mvm *mvm, void *config, |
| u32 flags, u8 channel_flags, |
| u32 max_channels) |
| { |
| struct iwl_scan_config_v2 *cfg = config; |
| |
| cfg->flags = cpu_to_le32(flags); |
| cfg->tx_chains = cpu_to_le32(iwl_mvm_get_valid_tx_ant(mvm)); |
| cfg->rx_chains = cpu_to_le32(iwl_mvm_scan_rx_ant(mvm)); |
| cfg->legacy_rates = iwl_mvm_scan_config_rates(mvm); |
| |
| if (iwl_mvm_is_cdb_supported(mvm)) { |
| enum iwl_mvm_scan_type lb_type, hb_type; |
| |
| lb_type = iwl_mvm_get_scan_type_band(mvm, NULL, |
| NL80211_BAND_2GHZ); |
| hb_type = iwl_mvm_get_scan_type_band(mvm, NULL, |
| NL80211_BAND_5GHZ); |
| |
| cfg->out_of_channel_time[SCAN_LB_LMAC_IDX] = |
| cpu_to_le32(scan_timing[lb_type].max_out_time); |
| cfg->suspend_time[SCAN_LB_LMAC_IDX] = |
| cpu_to_le32(scan_timing[lb_type].suspend_time); |
| |
| cfg->out_of_channel_time[SCAN_HB_LMAC_IDX] = |
| cpu_to_le32(scan_timing[hb_type].max_out_time); |
| cfg->suspend_time[SCAN_HB_LMAC_IDX] = |
| cpu_to_le32(scan_timing[hb_type].suspend_time); |
| } else { |
| enum iwl_mvm_scan_type type = |
| iwl_mvm_get_scan_type(mvm, NULL); |
| |
| cfg->out_of_channel_time[SCAN_LB_LMAC_IDX] = |
| cpu_to_le32(scan_timing[type].max_out_time); |
| cfg->suspend_time[SCAN_LB_LMAC_IDX] = |
| cpu_to_le32(scan_timing[type].suspend_time); |
| } |
| |
| iwl_mvm_fill_scan_dwell(mvm, &cfg->dwell); |
| |
| memcpy(&cfg->mac_addr, &mvm->addresses[0].addr, ETH_ALEN); |
| |
| cfg->bcast_sta_id = mvm->aux_sta.sta_id; |
| cfg->channel_flags = channel_flags; |
| |
| iwl_mvm_fill_channels(mvm, cfg->channel_array, max_channels); |
| } |
| |
| static int iwl_mvm_legacy_config_scan(struct iwl_mvm *mvm) |
| { |
| void *cfg; |
| int ret, cmd_size; |
| struct iwl_host_cmd cmd = { |
| .id = iwl_cmd_id(SCAN_CFG_CMD, IWL_ALWAYS_LONG_GROUP, 0), |
| }; |
| enum iwl_mvm_scan_type type; |
| enum iwl_mvm_scan_type hb_type = IWL_SCAN_TYPE_NOT_SET; |
| int num_channels = |
| mvm->nvm_data->bands[NL80211_BAND_2GHZ].n_channels + |
| mvm->nvm_data->bands[NL80211_BAND_5GHZ].n_channels; |
| u32 flags; |
| u8 channel_flags; |
| |
| if (WARN_ON(num_channels > mvm->fw->ucode_capa.n_scan_channels)) |
| num_channels = mvm->fw->ucode_capa.n_scan_channels; |
| |
| if (iwl_mvm_is_cdb_supported(mvm)) { |
| type = iwl_mvm_get_scan_type_band(mvm, NULL, |
| NL80211_BAND_2GHZ); |
| hb_type = iwl_mvm_get_scan_type_band(mvm, NULL, |
| NL80211_BAND_5GHZ); |
| if (type == mvm->scan_type && hb_type == mvm->hb_scan_type) |
| return 0; |
| } else { |
| type = iwl_mvm_get_scan_type(mvm, NULL); |
| if (type == mvm->scan_type) |
| return 0; |
| } |
| |
| if (iwl_mvm_cdb_scan_api(mvm)) |
| cmd_size = sizeof(struct iwl_scan_config_v2); |
| else |
| cmd_size = sizeof(struct iwl_scan_config_v1); |
| cmd_size += num_channels; |
| |
| cfg = kzalloc(cmd_size, GFP_KERNEL); |
| if (!cfg) |
| return -ENOMEM; |
| |
| flags = SCAN_CONFIG_FLAG_ACTIVATE | |
| SCAN_CONFIG_FLAG_ALLOW_CHUB_REQS | |
| SCAN_CONFIG_FLAG_SET_TX_CHAINS | |
| SCAN_CONFIG_FLAG_SET_RX_CHAINS | |
| SCAN_CONFIG_FLAG_SET_AUX_STA_ID | |
| SCAN_CONFIG_FLAG_SET_ALL_TIMES | |
| SCAN_CONFIG_FLAG_SET_LEGACY_RATES | |
| SCAN_CONFIG_FLAG_SET_MAC_ADDR | |
| SCAN_CONFIG_FLAG_SET_CHANNEL_FLAGS | |
| SCAN_CONFIG_N_CHANNELS(num_channels) | |
| (iwl_mvm_is_scan_fragmented(type) ? |
| SCAN_CONFIG_FLAG_SET_FRAGMENTED : |
| SCAN_CONFIG_FLAG_CLEAR_FRAGMENTED); |
| |
| channel_flags = IWL_CHANNEL_FLAG_EBS | |
| IWL_CHANNEL_FLAG_ACCURATE_EBS | |
| IWL_CHANNEL_FLAG_EBS_ADD | |
| IWL_CHANNEL_FLAG_PRE_SCAN_PASSIVE2ACTIVE; |
| |
| /* |
| * Check for fragmented scan on LMAC2 - high band. |
| * LMAC1 - low band is checked above. |
| */ |
| if (iwl_mvm_cdb_scan_api(mvm)) { |
| if (iwl_mvm_is_cdb_supported(mvm)) |
| flags |= (iwl_mvm_is_scan_fragmented(hb_type)) ? |
| SCAN_CONFIG_FLAG_SET_LMAC2_FRAGMENTED : |
| SCAN_CONFIG_FLAG_CLEAR_LMAC2_FRAGMENTED; |
| iwl_mvm_fill_scan_config_v2(mvm, cfg, flags, channel_flags, |
| num_channels); |
| } else { |
| iwl_mvm_fill_scan_config_v1(mvm, cfg, flags, channel_flags, |
| num_channels); |
| } |
| |
| cmd.data[0] = cfg; |
| cmd.len[0] = cmd_size; |
| cmd.dataflags[0] = IWL_HCMD_DFL_NOCOPY; |
| |
| IWL_DEBUG_SCAN(mvm, "Sending UMAC scan config\n"); |
| |
| ret = iwl_mvm_send_cmd(mvm, &cmd); |
| if (!ret) { |
| mvm->scan_type = type; |
| mvm->hb_scan_type = hb_type; |
| } |
| |
| kfree(cfg); |
| return ret; |
| } |
| |
| int iwl_mvm_config_scan(struct iwl_mvm *mvm) |
| { |
| struct iwl_scan_config cfg; |
| struct iwl_host_cmd cmd = { |
| .id = iwl_cmd_id(SCAN_CFG_CMD, IWL_ALWAYS_LONG_GROUP, 0), |
| .len[0] = sizeof(cfg), |
| .data[0] = &cfg, |
| .dataflags[0] = IWL_HCMD_DFL_NOCOPY, |
| }; |
| |
| if (!iwl_mvm_is_reduced_config_scan_supported(mvm)) |
| return iwl_mvm_legacy_config_scan(mvm); |
| |
| memset(&cfg, 0, sizeof(cfg)); |
| |
| cfg.bcast_sta_id = mvm->aux_sta.sta_id; |
| cfg.tx_chains = cpu_to_le32(iwl_mvm_get_valid_tx_ant(mvm)); |
| cfg.rx_chains = cpu_to_le32(iwl_mvm_scan_rx_ant(mvm)); |
| |
| IWL_DEBUG_SCAN(mvm, "Sending UMAC scan config\n"); |
| |
| return iwl_mvm_send_cmd(mvm, &cmd); |
| } |
| |
| static int iwl_mvm_scan_uid_by_status(struct iwl_mvm *mvm, int status) |
| { |
| int i; |
| |
| for (i = 0; i < mvm->max_scans; i++) |
| if (mvm->scan_uid_status[i] == status) |
| return i; |
| |
| return -ENOENT; |
| } |
| |
| static void iwl_mvm_scan_umac_dwell(struct iwl_mvm *mvm, |
| struct iwl_scan_req_umac *cmd, |
| struct iwl_mvm_scan_params *params) |
| { |
| struct iwl_mvm_scan_timing_params *timing, *hb_timing; |
| u8 active_dwell, passive_dwell; |
| |
| timing = &scan_timing[params->type]; |
| active_dwell = params->measurement_dwell ? |
| params->measurement_dwell : IWL_SCAN_DWELL_ACTIVE; |
| passive_dwell = params->measurement_dwell ? |
| params->measurement_dwell : IWL_SCAN_DWELL_PASSIVE; |
| |
| if (iwl_mvm_is_adaptive_dwell_supported(mvm)) { |
| cmd->v7.adwell_default_n_aps_social = |
| IWL_SCAN_ADWELL_DEFAULT_N_APS_SOCIAL; |
| cmd->v7.adwell_default_n_aps = |
| IWL_SCAN_ADWELL_DEFAULT_LB_N_APS; |
| |
| if (iwl_mvm_is_adwell_hb_ap_num_supported(mvm)) |
| cmd->v9.adwell_default_hb_n_aps = |
| IWL_SCAN_ADWELL_DEFAULT_HB_N_APS; |
| |
| /* if custom max budget was configured with debugfs */ |
| if (IWL_MVM_ADWELL_MAX_BUDGET) |
| cmd->v7.adwell_max_budget = |
| cpu_to_le16(IWL_MVM_ADWELL_MAX_BUDGET); |
| else if (params->ssids && params->ssids[0].ssid_len) |
| cmd->v7.adwell_max_budget = |
| cpu_to_le16(IWL_SCAN_ADWELL_MAX_BUDGET_DIRECTED_SCAN); |
| else |
| cmd->v7.adwell_max_budget = |
| cpu_to_le16(IWL_SCAN_ADWELL_MAX_BUDGET_FULL_SCAN); |
| |
| cmd->v7.scan_priority = cpu_to_le32(IWL_SCAN_PRIORITY_EXT_6); |
| cmd->v7.max_out_time[SCAN_LB_LMAC_IDX] = |
| cpu_to_le32(timing->max_out_time); |
| cmd->v7.suspend_time[SCAN_LB_LMAC_IDX] = |
| cpu_to_le32(timing->suspend_time); |
| |
| if (iwl_mvm_is_cdb_supported(mvm)) { |
| hb_timing = &scan_timing[params->hb_type]; |
| |
| cmd->v7.max_out_time[SCAN_HB_LMAC_IDX] = |
| cpu_to_le32(hb_timing->max_out_time); |
| cmd->v7.suspend_time[SCAN_HB_LMAC_IDX] = |
| cpu_to_le32(hb_timing->suspend_time); |
| } |
| |
| if (!iwl_mvm_is_adaptive_dwell_v2_supported(mvm)) { |
| cmd->v7.active_dwell = active_dwell; |
| cmd->v7.passive_dwell = passive_dwell; |
| cmd->v7.fragmented_dwell = IWL_SCAN_DWELL_FRAGMENTED; |
| } else { |
| cmd->v8.active_dwell[SCAN_LB_LMAC_IDX] = active_dwell; |
| cmd->v8.passive_dwell[SCAN_LB_LMAC_IDX] = passive_dwell; |
| if (iwl_mvm_is_cdb_supported(mvm)) { |
| cmd->v8.active_dwell[SCAN_HB_LMAC_IDX] = |
| active_dwell; |
| cmd->v8.passive_dwell[SCAN_HB_LMAC_IDX] = |
| passive_dwell; |
| } |
| } |
| } else { |
| cmd->v1.extended_dwell = params->measurement_dwell ? |
| params->measurement_dwell : IWL_SCAN_DWELL_EXTENDED; |
| cmd->v1.active_dwell = active_dwell; |
| cmd->v1.passive_dwell = passive_dwell; |
| cmd->v1.fragmented_dwell = IWL_SCAN_DWELL_FRAGMENTED; |
| |
| if (iwl_mvm_is_cdb_supported(mvm)) { |
| hb_timing = &scan_timing[params->hb_type]; |
| |
| cmd->v6.max_out_time[SCAN_HB_LMAC_IDX] = |
| cpu_to_le32(hb_timing->max_out_time); |
| cmd->v6.suspend_time[SCAN_HB_LMAC_IDX] = |
| cpu_to_le32(hb_timing->suspend_time); |
| } |
| |
| if (iwl_mvm_cdb_scan_api(mvm)) { |
| cmd->v6.scan_priority = |
| cpu_to_le32(IWL_SCAN_PRIORITY_EXT_6); |
| cmd->v6.max_out_time[SCAN_LB_LMAC_IDX] = |
| cpu_to_le32(timing->max_out_time); |
| cmd->v6.suspend_time[SCAN_LB_LMAC_IDX] = |
| cpu_to_le32(timing->suspend_time); |
| } else { |
| cmd->v1.scan_priority = |
| cpu_to_le32(IWL_SCAN_PRIORITY_EXT_6); |
| cmd->v1.max_out_time = |
| cpu_to_le32(timing->max_out_time); |
| cmd->v1.suspend_time = |
| cpu_to_le32(timing->suspend_time); |
| } |
| } |
| |
| if (iwl_mvm_is_regular_scan(params)) |
| cmd->ooc_priority = cpu_to_le32(IWL_SCAN_PRIORITY_EXT_6); |
| else |
| cmd->ooc_priority = cpu_to_le32(IWL_SCAN_PRIORITY_EXT_2); |
| } |
| |
| static u32 iwl_mvm_scan_umac_ooc_priority(struct iwl_mvm_scan_params *params) |
| { |
| return iwl_mvm_is_regular_scan(params) ? |
| IWL_SCAN_PRIORITY_EXT_6 : |
| IWL_SCAN_PRIORITY_EXT_2; |
| } |
| |
| static void |
| iwl_mvm_scan_umac_dwell_v10(struct iwl_mvm *mvm, |
| struct iwl_scan_general_params_v10 *general_params, |
| struct iwl_mvm_scan_params *params) |
| { |
| struct iwl_mvm_scan_timing_params *timing, *hb_timing; |
| u8 active_dwell, passive_dwell; |
| |
| timing = &scan_timing[params->type]; |
| active_dwell = params->measurement_dwell ? |
| params->measurement_dwell : IWL_SCAN_DWELL_ACTIVE; |
| passive_dwell = params->measurement_dwell ? |
| params->measurement_dwell : IWL_SCAN_DWELL_PASSIVE; |
| |
| general_params->adwell_default_social_chn = |
| IWL_SCAN_ADWELL_DEFAULT_N_APS_SOCIAL; |
| general_params->adwell_default_2g = IWL_SCAN_ADWELL_DEFAULT_LB_N_APS; |
| general_params->adwell_default_5g = IWL_SCAN_ADWELL_DEFAULT_HB_N_APS; |
| |
| /* if custom max budget was configured with debugfs */ |
| if (IWL_MVM_ADWELL_MAX_BUDGET) |
| general_params->adwell_max_budget = |
| cpu_to_le16(IWL_MVM_ADWELL_MAX_BUDGET); |
| else if (params->ssids && params->ssids[0].ssid_len) |
| general_params->adwell_max_budget = |
| cpu_to_le16(IWL_SCAN_ADWELL_MAX_BUDGET_DIRECTED_SCAN); |
| else |
| general_params->adwell_max_budget = |
| cpu_to_le16(IWL_SCAN_ADWELL_MAX_BUDGET_FULL_SCAN); |
| |
| general_params->scan_priority = cpu_to_le32(IWL_SCAN_PRIORITY_EXT_6); |
| general_params->max_out_of_time[SCAN_LB_LMAC_IDX] = |
| cpu_to_le32(timing->max_out_time); |
| general_params->suspend_time[SCAN_LB_LMAC_IDX] = |
| cpu_to_le32(timing->suspend_time); |
| |
| hb_timing = &scan_timing[params->hb_type]; |
| |
| general_params->max_out_of_time[SCAN_HB_LMAC_IDX] = |
| cpu_to_le32(hb_timing->max_out_time); |
| general_params->suspend_time[SCAN_HB_LMAC_IDX] = |
| cpu_to_le32(hb_timing->suspend_time); |
| |
| general_params->active_dwell[SCAN_LB_LMAC_IDX] = active_dwell; |
| general_params->passive_dwell[SCAN_LB_LMAC_IDX] = passive_dwell; |
| general_params->active_dwell[SCAN_HB_LMAC_IDX] = active_dwell; |
| general_params->passive_dwell[SCAN_HB_LMAC_IDX] = passive_dwell; |
| } |
| |
| struct iwl_mvm_scan_channel_segment { |
| u8 start_idx; |
| u8 end_idx; |
| u8 first_channel_id; |
| u8 last_channel_id; |
| u8 channel_spacing_shift; |
| u8 band; |
| }; |
| |
| static const struct iwl_mvm_scan_channel_segment scan_channel_segments[] = { |
| { |
| .start_idx = 0, |
| .end_idx = 13, |
| .first_channel_id = 1, |
| .last_channel_id = 14, |
| .channel_spacing_shift = 0, |
| .band = PHY_BAND_24 |
| }, |
| { |
| .start_idx = 14, |
| .end_idx = 41, |
| .first_channel_id = 36, |
| .last_channel_id = 144, |
| .channel_spacing_shift = 2, |
| .band = PHY_BAND_5 |
| }, |
| { |
| .start_idx = 42, |
| .end_idx = 50, |
| .first_channel_id = 149, |
| .last_channel_id = 181, |
| .channel_spacing_shift = 2, |
| .band = PHY_BAND_5 |
| }, |
| }; |
| |
| static int iwl_mvm_scan_ch_and_band_to_idx(u8 channel_id, u8 band) |
| { |
| int i, index; |
| |
| if (!channel_id) |
| return -EINVAL; |
| |
| for (i = 0; i < ARRAY_SIZE(scan_channel_segments); i++) { |
| const struct iwl_mvm_scan_channel_segment *ch_segment = |
| &scan_channel_segments[i]; |
| u32 ch_offset; |
| |
| if (ch_segment->band != band || |
| ch_segment->first_channel_id > channel_id || |
| ch_segment->last_channel_id < channel_id) |
| continue; |
| |
| ch_offset = (channel_id - ch_segment->first_channel_id) >> |
| ch_segment->channel_spacing_shift; |
| |
| index = scan_channel_segments[i].start_idx + ch_offset; |
| if (index < IWL_SCAN_NUM_CHANNELS) |
| return index; |
| |
| break; |
| } |
| |
| return -EINVAL; |
| } |
| |
| static void iwl_mvm_scan_ch_add_n_aps_override(enum nl80211_iftype vif_type, |
| u8 ch_id, u8 band, u8 *ch_bitmap, |
| size_t bitmap_n_entries) |
| { |
| int i; |
| static const u8 p2p_go_friendly_chs[] = { |
| 36, 40, 44, 48, 149, 153, 157, 161, 165, |
| }; |
| |
| if (vif_type != NL80211_IFTYPE_P2P_DEVICE) |
| return; |
| |
| for (i = 0; i < ARRAY_SIZE(p2p_go_friendly_chs); i++) { |
| if (p2p_go_friendly_chs[i] == ch_id) { |
| int ch_idx, bitmap_idx; |
| |
| ch_idx = iwl_mvm_scan_ch_and_band_to_idx(ch_id, band); |
| if (ch_idx < 0) |
| return; |
| |
| bitmap_idx = ch_idx / 8; |
| if (bitmap_idx >= bitmap_n_entries) |
| return; |
| |
| ch_idx = ch_idx % 8; |
| ch_bitmap[bitmap_idx] |= BIT(ch_idx); |
| |
| return; |
| } |
| } |
| } |
| |
| static void |
| iwl_mvm_umac_scan_cfg_channels(struct iwl_mvm *mvm, |
| struct ieee80211_channel **channels, |
| int n_channels, u32 flags, |
| struct iwl_scan_channel_cfg_umac *channel_cfg) |
| { |
| int i; |
| |
| for (i = 0; i < n_channels; i++) { |
| channel_cfg[i].flags = cpu_to_le32(flags); |
| channel_cfg[i].v1.channel_num = channels[i]->hw_value; |
| if (iwl_mvm_is_scan_ext_chan_supported(mvm)) { |
| enum nl80211_band band = channels[i]->band; |
| |
| channel_cfg[i].v2.band = |
| iwl_mvm_phy_band_from_nl80211(band); |
| channel_cfg[i].v2.iter_count = 1; |
| channel_cfg[i].v2.iter_interval = 0; |
| } else { |
| channel_cfg[i].v1.iter_count = 1; |
| channel_cfg[i].v1.iter_interval = 0; |
| } |
| } |
| } |
| |
| static void |
| iwl_mvm_umac_scan_cfg_channels_v4(struct iwl_mvm *mvm, |
| struct ieee80211_channel **channels, |
| struct iwl_scan_channel_params_v4 *cp, |
| int n_channels, u32 flags, |
| enum nl80211_iftype vif_type) |
| { |
| u8 *bitmap = cp->adwell_ch_override_bitmap; |
| size_t bitmap_n_entries = ARRAY_SIZE(cp->adwell_ch_override_bitmap); |
| int i; |
| |
| for (i = 0; i < n_channels; i++) { |
| enum nl80211_band band = channels[i]->band; |
| struct iwl_scan_channel_cfg_umac *cfg = |
| &cp->channel_config[i]; |
| |
| cfg->flags = cpu_to_le32(flags); |
| cfg->v2.channel_num = channels[i]->hw_value; |
| cfg->v2.band = iwl_mvm_phy_band_from_nl80211(band); |
| cfg->v2.iter_count = 1; |
| cfg->v2.iter_interval = 0; |
| |
| iwl_mvm_scan_ch_add_n_aps_override(vif_type, |
| cfg->v2.channel_num, |
| cfg->v2.band, bitmap, |
| bitmap_n_entries); |
| } |
| } |
| |
| static u8 iwl_mvm_scan_umac_chan_flags_v2(struct iwl_mvm *mvm, |
| struct iwl_mvm_scan_params *params, |
| struct ieee80211_vif *vif) |
| { |
| u8 flags = 0; |
| |
| flags |= IWL_SCAN_CHANNEL_FLAG_ENABLE_CHAN_ORDER; |
| |
| if (iwl_mvm_scan_use_ebs(mvm, vif)) |
| flags |= IWL_SCAN_CHANNEL_FLAG_EBS | |
| IWL_SCAN_CHANNEL_FLAG_EBS_ACCURATE | |
| IWL_SCAN_CHANNEL_FLAG_CACHE_ADD; |
| |
| /* set fragmented ebs for fragmented scan on HB channels */ |
| if (iwl_mvm_is_scan_fragmented(params->hb_type)) |
| flags |= IWL_SCAN_CHANNEL_FLAG_EBS_FRAG; |
| |
| return flags; |
| } |
| |
| static u16 iwl_mvm_scan_umac_flags_v2(struct iwl_mvm *mvm, |
| struct iwl_mvm_scan_params *params, |
| struct ieee80211_vif *vif, |
| int type) |
| { |
| u16 flags = 0; |
| |
| if (params->n_ssids == 0) |
| flags |= IWL_UMAC_SCAN_GEN_FLAGS_V2_FORCE_PASSIVE; |
| |
| if (iwl_mvm_is_scan_fragmented(params->type)) |
| flags |= IWL_UMAC_SCAN_GEN_FLAGS_V2_FRAGMENTED_LMAC1; |
| |
| if (iwl_mvm_is_scan_fragmented(params->hb_type)) |
| flags |= IWL_UMAC_SCAN_GEN_FLAGS_V2_FRAGMENTED_LMAC2; |
| |
| if (params->pass_all) |
| flags |= IWL_UMAC_SCAN_GEN_FLAGS_V2_PASS_ALL; |
| else |
| flags |= IWL_UMAC_SCAN_GEN_FLAGS_V2_MATCH; |
| |
| if (!iwl_mvm_is_regular_scan(params)) |
| flags |= IWL_UMAC_SCAN_GEN_FLAGS_V2_PERIODIC; |
| |
| if (params->measurement_dwell || |
| mvm->sched_scan_pass_all == SCHED_SCAN_PASS_ALL_ENABLED) |
| flags |= IWL_UMAC_SCAN_GEN_FLAGS_V2_NTFY_ITER_COMPLETE; |
| |
| if (IWL_MVM_ADWELL_ENABLE) |
| flags |= IWL_UMAC_SCAN_GEN_FLAGS_V2_ADAPTIVE_DWELL; |
| |
| if (type == IWL_MVM_SCAN_SCHED || type == IWL_MVM_SCAN_NETDETECT) |
| flags |= IWL_UMAC_SCAN_GEN_FLAGS_V2_PREEMPTIVE; |
| |
| return flags; |
| } |
| |
| static u16 iwl_mvm_scan_umac_flags(struct iwl_mvm *mvm, |
| struct iwl_mvm_scan_params *params, |
| struct ieee80211_vif *vif) |
| { |
| u16 flags = 0; |
| |
| if (params->n_ssids == 0) |
| flags = IWL_UMAC_SCAN_GEN_FLAGS_PASSIVE; |
| |
| if (params->n_ssids == 1 && params->ssids[0].ssid_len != 0) |
| flags |= IWL_UMAC_SCAN_GEN_FLAGS_PRE_CONNECT; |
| |
| if (iwl_mvm_is_scan_fragmented(params->type)) |
| flags |= IWL_UMAC_SCAN_GEN_FLAGS_FRAGMENTED; |
| |
| if (iwl_mvm_is_cdb_supported(mvm) && |
| iwl_mvm_is_scan_fragmented(params->hb_type)) |
| flags |= IWL_UMAC_SCAN_GEN_FLAGS_LMAC2_FRAGMENTED; |
| |
| if (iwl_mvm_rrm_scan_needed(mvm) && |
| fw_has_capa(&mvm->fw->ucode_capa, |
| IWL_UCODE_TLV_CAPA_WFA_TPC_REP_IE_SUPPORT)) |
| flags |= IWL_UMAC_SCAN_GEN_FLAGS_RRM_ENABLED; |
| |
| if (params->pass_all) |
| flags |= IWL_UMAC_SCAN_GEN_FLAGS_PASS_ALL; |
| else |
| flags |= IWL_UMAC_SCAN_GEN_FLAGS_MATCH; |
| |
| if (!iwl_mvm_is_regular_scan(params)) |
| flags |= IWL_UMAC_SCAN_GEN_FLAGS_PERIODIC; |
| |
| if (params->measurement_dwell) |
| flags |= IWL_UMAC_SCAN_GEN_FLAGS_ITER_COMPLETE; |
| |
| #ifdef CONFIG_IWLWIFI_DEBUGFS |
| if (mvm->scan_iter_notif_enabled) |
| flags |= IWL_UMAC_SCAN_GEN_FLAGS_ITER_COMPLETE; |
| #endif |
| |
| if (mvm->sched_scan_pass_all == SCHED_SCAN_PASS_ALL_ENABLED) |
| flags |= IWL_UMAC_SCAN_GEN_FLAGS_ITER_COMPLETE; |
| |
| if (iwl_mvm_is_adaptive_dwell_supported(mvm) && IWL_MVM_ADWELL_ENABLE) |
| flags |= IWL_UMAC_SCAN_GEN_FLAGS_ADAPTIVE_DWELL; |
| |
| /* |
| * Extended dwell is relevant only for low band to start with, as it is |
| * being used for social channles only (1, 6, 11), so we can check |
| * only scan type on low band also for CDB. |
| */ |
| if (iwl_mvm_is_regular_scan(params) && |
| vif->type != NL80211_IFTYPE_P2P_DEVICE && |
| !iwl_mvm_is_scan_fragmented(params->type) && |
| !iwl_mvm_is_adaptive_dwell_supported(mvm) && |
| !iwl_mvm_is_oce_supported(mvm)) |
| flags |= IWL_UMAC_SCAN_GEN_FLAGS_EXTENDED_DWELL; |
| |
| if (iwl_mvm_is_oce_supported(mvm)) { |
| if ((params->flags & |
| NL80211_SCAN_FLAG_OCE_PROBE_REQ_HIGH_TX_RATE)) |
| flags |= IWL_UMAC_SCAN_GEN_FLAGS_PROB_REQ_HIGH_TX_RATE; |
| /* Since IWL_UMAC_SCAN_GEN_FLAGS_EXTENDED_DWELL and |
| * NL80211_SCAN_FLAG_OCE_PROBE_REQ_DEFERRAL_SUPPRESSION shares |
| * the same bit, we need to make sure that we use this bit here |
| * only when IWL_UMAC_SCAN_GEN_FLAGS_EXTENDED_DWELL cannot be |
| * used. */ |
| if ((params->flags & |
| NL80211_SCAN_FLAG_OCE_PROBE_REQ_DEFERRAL_SUPPRESSION) && |
| !WARN_ON_ONCE(!iwl_mvm_is_adaptive_dwell_supported(mvm))) |
| flags |= IWL_UMAC_SCAN_GEN_FLAGS_PROB_REQ_DEFER_SUPP; |
| if ((params->flags & NL80211_SCAN_FLAG_FILS_MAX_CHANNEL_TIME)) |
| flags |= IWL_UMAC_SCAN_GEN_FLAGS_MAX_CHNL_TIME; |
| } |
| |
| return flags; |
| } |
| |
| static int |
| iwl_mvm_fill_scan_sched_params(struct iwl_mvm_scan_params *params, |
| struct iwl_scan_umac_schedule *schedule, |
| __le16 *delay) |
| { |
| int i; |
| if (WARN_ON(!params->n_scan_plans || |
| params->n_scan_plans > IWL_MAX_SCHED_SCAN_PLANS)) |
| return -EINVAL; |
| |
| for (i = 0; i < params->n_scan_plans; i++) { |
| struct cfg80211_sched_scan_plan *scan_plan = |
| ¶ms->scan_plans[i]; |
| |
| schedule[i].iter_count = scan_plan->iterations; |
| schedule[i].interval = |
| cpu_to_le16(scan_plan->interval); |
| } |
| |
| /* |
| * If the number of iterations of the last scan plan is set to |
| * zero, it should run infinitely. However, this is not always the case. |
| * For example, when regular scan is requested the driver sets one scan |
| * plan with one iteration. |
| */ |
| if (!schedule[params->n_scan_plans - 1].iter_count) |
| schedule[params->n_scan_plans - 1].iter_count = 0xff; |
| |
| *delay = cpu_to_le16(params->delay); |
| |
| return 0; |
| } |
| |
| static int iwl_mvm_scan_umac(struct iwl_mvm *mvm, struct ieee80211_vif *vif, |
| struct iwl_mvm_scan_params *params, |
| int type, int uid) |
| { |
| struct iwl_scan_req_umac *cmd = mvm->scan_cmd; |
| struct iwl_scan_umac_chan_param *chan_param; |
| void *cmd_data = iwl_mvm_get_scan_req_umac_data(mvm); |
| void *sec_part = cmd_data + sizeof(struct iwl_scan_channel_cfg_umac) * |
| mvm->fw->ucode_capa.n_scan_channels; |
| struct iwl_scan_req_umac_tail_v2 *tail_v2 = |
| (struct iwl_scan_req_umac_tail_v2 *)sec_part; |
| struct iwl_scan_req_umac_tail_v1 *tail_v1; |
| struct iwl_ssid_ie *direct_scan; |
| int ret = 0; |
| u32 ssid_bitmap = 0; |
| u8 channel_flags = 0; |
| u16 gen_flags; |
| struct iwl_mvm_vif *scan_vif = iwl_mvm_vif_from_mac80211(vif); |
| |
| chan_param = iwl_mvm_get_scan_req_umac_channel(mvm); |
| |
| iwl_mvm_scan_umac_dwell(mvm, cmd, params); |
| |
| mvm->scan_uid_status[uid] = type; |
| |
| cmd->uid = cpu_to_le32(uid); |
| gen_flags = iwl_mvm_scan_umac_flags(mvm, params, vif); |
| cmd->general_flags = cpu_to_le16(gen_flags); |
| if (iwl_mvm_is_adaptive_dwell_v2_supported(mvm)) { |
| if (gen_flags & IWL_UMAC_SCAN_GEN_FLAGS_FRAGMENTED) |
| cmd->v8.num_of_fragments[SCAN_LB_LMAC_IDX] = |
| IWL_SCAN_NUM_OF_FRAGS; |
| if (gen_flags & IWL_UMAC_SCAN_GEN_FLAGS_LMAC2_FRAGMENTED) |
| cmd->v8.num_of_fragments[SCAN_HB_LMAC_IDX] = |
| IWL_SCAN_NUM_OF_FRAGS; |
| |
| cmd->v8.general_flags2 = |
| IWL_UMAC_SCAN_GEN_FLAGS2_ALLOW_CHNL_REORDER; |
| } |
| |
| cmd->scan_start_mac_id = scan_vif->id; |
| |
| if (type == IWL_MVM_SCAN_SCHED || type == IWL_MVM_SCAN_NETDETECT) |
| cmd->flags = cpu_to_le32(IWL_UMAC_SCAN_FLAG_PREEMPTIVE); |
| |
| if (iwl_mvm_scan_use_ebs(mvm, vif)) { |
| channel_flags = IWL_SCAN_CHANNEL_FLAG_EBS | |
| IWL_SCAN_CHANNEL_FLAG_EBS_ACCURATE | |
| IWL_SCAN_CHANNEL_FLAG_CACHE_ADD; |
| |
| /* set fragmented ebs for fragmented scan on HB channels */ |
| if (iwl_mvm_is_frag_ebs_supported(mvm)) { |
| if (gen_flags & |
| IWL_UMAC_SCAN_GEN_FLAGS_LMAC2_FRAGMENTED || |
| (!iwl_mvm_is_cdb_supported(mvm) && |
| gen_flags & IWL_UMAC_SCAN_GEN_FLAGS_FRAGMENTED)) |
| channel_flags |= IWL_SCAN_CHANNEL_FLAG_EBS_FRAG; |
| } |
| } |
| |
| chan_param->flags = channel_flags; |
| chan_param->count = params->n_channels; |
| |
| ret = iwl_mvm_fill_scan_sched_params(params, tail_v2->schedule, |
| &tail_v2->delay); |
| if (ret) |
| return ret; |
| |
| if (iwl_mvm_is_scan_ext_chan_supported(mvm)) { |
| tail_v2->preq = params->preq; |
| direct_scan = tail_v2->direct_scan; |
| } else { |
| tail_v1 = (struct iwl_scan_req_umac_tail_v1 *)sec_part; |
| iwl_mvm_scan_set_legacy_probe_req(&tail_v1->preq, |
| ¶ms->preq); |
| direct_scan = tail_v1->direct_scan; |
| } |
| iwl_scan_build_ssids(params, direct_scan, &ssid_bitmap); |
| iwl_mvm_umac_scan_cfg_channels(mvm, params->channels, |
| params->n_channels, ssid_bitmap, |
| cmd_data); |
| return 0; |
| } |
| |
| static void |
| iwl_mvm_scan_umac_fill_general_p_v10(struct iwl_mvm *mvm, |
| struct iwl_mvm_scan_params *params, |
| struct ieee80211_vif *vif, |
| struct iwl_scan_general_params_v10 *gp, |
| u16 gen_flags) |
| { |
| struct iwl_mvm_vif *scan_vif = iwl_mvm_vif_from_mac80211(vif); |
| |
| iwl_mvm_scan_umac_dwell_v10(mvm, gp, params); |
| |
| gp->flags = cpu_to_le16(gen_flags); |
| |
| if (gen_flags & IWL_UMAC_SCAN_GEN_FLAGS_V2_FRAGMENTED_LMAC1) |
| gp->num_of_fragments[SCAN_LB_LMAC_IDX] = IWL_SCAN_NUM_OF_FRAGS; |
| if (gen_flags & IWL_UMAC_SCAN_GEN_FLAGS_V2_FRAGMENTED_LMAC2) |
| gp->num_of_fragments[SCAN_HB_LMAC_IDX] = IWL_SCAN_NUM_OF_FRAGS; |
| |
| gp->scan_start_mac_id = scan_vif->id; |
| } |
| |
| static void |
| iwl_mvm_scan_umac_fill_probe_p_v3(struct iwl_mvm_scan_params *params, |
| struct iwl_scan_probe_params_v3 *pp) |
| { |
| pp->preq = params->preq; |
| pp->ssid_num = params->n_ssids; |
| iwl_scan_build_ssids(params, pp->direct_scan, NULL); |
| } |
| |
| static void |
| iwl_mvm_scan_umac_fill_probe_p_v4(struct iwl_mvm_scan_params *params, |
| struct iwl_scan_probe_params_v4 *pp, |
| u32 *bitmap_ssid) |
| { |
| pp->preq = params->preq; |
| iwl_scan_build_ssids(params, pp->direct_scan, bitmap_ssid); |
| } |
| |
| static void |
| iwl_mvm_scan_umac_fill_ch_p_v3(struct iwl_mvm *mvm, |
| struct iwl_mvm_scan_params *params, |
| struct ieee80211_vif *vif, |
| struct iwl_scan_channel_params_v3 *cp) |
| { |
| cp->flags = iwl_mvm_scan_umac_chan_flags_v2(mvm, params, vif); |
| cp->count = params->n_channels; |
| |
| iwl_mvm_umac_scan_cfg_channels(mvm, params->channels, |
| params->n_channels, 0, |
| cp->channel_config); |
| } |
| |
| static void |
| iwl_mvm_scan_umac_fill_ch_p_v4(struct iwl_mvm *mvm, |
| struct iwl_mvm_scan_params *params, |
| struct ieee80211_vif *vif, |
| struct iwl_scan_channel_params_v4 *cp, |
| u32 channel_cfg_flags) |
| { |
| cp->flags = iwl_mvm_scan_umac_chan_flags_v2(mvm, params, vif); |
| cp->count = params->n_channels; |
| cp->num_of_aps_override = IWL_SCAN_ADWELL_DEFAULT_N_APS_OVERRIDE; |
| |
| iwl_mvm_umac_scan_cfg_channels_v4(mvm, params->channels, cp, |
| params->n_channels, |
| channel_cfg_flags, |
| vif->type); |
| } |
| |
| static int iwl_mvm_scan_umac_v11(struct iwl_mvm *mvm, struct ieee80211_vif *vif, |
| struct iwl_mvm_scan_params *params, int type, |
| int uid) |
| { |
| struct iwl_scan_req_umac_v11 *cmd = mvm->scan_cmd; |
| struct iwl_scan_req_params_v11 *scan_p = &cmd->scan_params; |
| int ret; |
| u16 gen_flags; |
| |
| mvm->scan_uid_status[uid] = type; |
| |
| cmd->ooc_priority = cpu_to_le32(iwl_mvm_scan_umac_ooc_priority(params)); |
| cmd->uid = cpu_to_le32(uid); |
| |
| gen_flags = iwl_mvm_scan_umac_flags_v2(mvm, params, vif, type); |
| iwl_mvm_scan_umac_fill_general_p_v10(mvm, params, vif, |
| &scan_p->general_params, |
| gen_flags); |
| |
| ret = iwl_mvm_fill_scan_sched_params(params, |
| scan_p->periodic_params.schedule, |
| &scan_p->periodic_params.delay); |
| if (ret) |
| return ret; |
| |
| iwl_mvm_scan_umac_fill_probe_p_v3(params, &scan_p->probe_params); |
| iwl_mvm_scan_umac_fill_ch_p_v3(mvm, params, vif, |
| &scan_p->channel_params); |
| |
| return 0; |
| } |
| |
| static int iwl_mvm_scan_umac_v12(struct iwl_mvm *mvm, struct ieee80211_vif *vif, |
| struct iwl_mvm_scan_params *params, int type, |
| int uid) |
| { |
| struct iwl_scan_req_umac_v12 *cmd = mvm->scan_cmd; |
| struct iwl_scan_req_params_v12 *scan_p = &cmd->scan_params; |
| int ret; |
| u16 gen_flags; |
| |
| mvm->scan_uid_status[uid] = type; |
| |
| cmd->ooc_priority = cpu_to_le32(iwl_mvm_scan_umac_ooc_priority(params)); |
| cmd->uid = cpu_to_le32(uid); |
| |
| gen_flags = iwl_mvm_scan_umac_flags_v2(mvm, params, vif, type); |
| iwl_mvm_scan_umac_fill_general_p_v10(mvm, params, vif, |
| &scan_p->general_params, |
| gen_flags); |
| |
| ret = iwl_mvm_fill_scan_sched_params(params, |
| scan_p->periodic_params.schedule, |
| &scan_p->periodic_params.delay); |
| if (ret) |
| return ret; |
| |
| iwl_mvm_scan_umac_fill_probe_p_v3(params, &scan_p->probe_params); |
| iwl_mvm_scan_umac_fill_ch_p_v4(mvm, params, vif, |
| &scan_p->channel_params, 0); |
| |
| return 0; |
| } |
| |
| static int iwl_mvm_scan_umac_v13(struct iwl_mvm *mvm, struct ieee80211_vif *vif, |
| struct iwl_mvm_scan_params *params, int type, |
| int uid) |
| { |
| struct iwl_scan_req_umac_v13 *cmd = mvm->scan_cmd; |
| struct iwl_scan_req_params_v13 *scan_p = &cmd->scan_params; |
| int ret; |
| u16 gen_flags; |
| u32 bitmap_ssid = 0; |
| |
| mvm->scan_uid_status[uid] = type; |
| |
| cmd->ooc_priority = cpu_to_le32(iwl_mvm_scan_umac_ooc_priority(params)); |
| cmd->uid = cpu_to_le32(uid); |
| |
| gen_flags = iwl_mvm_scan_umac_flags_v2(mvm, params, vif, type); |
| iwl_mvm_scan_umac_fill_general_p_v10(mvm, params, vif, |
| &scan_p->general_params, |
| gen_flags); |
| |
| ret = iwl_mvm_fill_scan_sched_params(params, |
| scan_p->periodic_params.schedule, |
| &scan_p->periodic_params.delay); |
| if (ret) |
| return ret; |
| |
| iwl_mvm_scan_umac_fill_probe_p_v4(params, &scan_p->probe_params, |
| &bitmap_ssid); |
| iwl_mvm_scan_umac_fill_ch_p_v4(mvm, params, vif, |
| &scan_p->channel_params, bitmap_ssid); |
| |
| return 0; |
| } |
| |
| static int iwl_mvm_num_scans(struct iwl_mvm *mvm) |
| { |
| return hweight32(mvm->scan_status & IWL_MVM_SCAN_MASK); |
| } |
| |
| static int iwl_mvm_check_running_scans(struct iwl_mvm *mvm, int type) |
| { |
| bool unified_image = fw_has_capa(&mvm->fw->ucode_capa, |
| IWL_UCODE_TLV_CAPA_CNSLDTD_D3_D0_IMG); |
| |
| /* This looks a bit arbitrary, but the idea is that if we run |
| * out of possible simultaneous scans and the userspace is |
| * trying to run a scan type that is already running, we |
| * return -EBUSY. But if the userspace wants to start a |
| * different type of scan, we stop the opposite type to make |
| * space for the new request. The reason is backwards |
| * compatibility with old wpa_supplicant that wouldn't stop a |
| * scheduled scan before starting a normal scan. |
| */ |
| |
| /* FW supports only a single periodic scan */ |
| if ((type == IWL_MVM_SCAN_SCHED || type == IWL_MVM_SCAN_NETDETECT) && |
| mvm->scan_status & (IWL_MVM_SCAN_SCHED | IWL_MVM_SCAN_NETDETECT)) |
| return -EBUSY; |
| |
| if (iwl_mvm_num_scans(mvm) < mvm->max_scans) |
| return 0; |
| |
| /* Use a switch, even though this is a bitmask, so that more |
| * than one bits set will fall in default and we will warn. |
| */ |
| switch (type) { |
| case IWL_MVM_SCAN_REGULAR: |
| if (mvm->scan_status & IWL_MVM_SCAN_REGULAR_MASK) |
| return -EBUSY; |
| return iwl_mvm_scan_stop(mvm, IWL_MVM_SCAN_SCHED, true); |
| case IWL_MVM_SCAN_SCHED: |
| if (mvm->scan_status & IWL_MVM_SCAN_SCHED_MASK) |
| return -EBUSY; |
| return iwl_mvm_scan_stop(mvm, IWL_MVM_SCAN_REGULAR, true); |
| case IWL_MVM_SCAN_NETDETECT: |
| /* For non-unified images, there's no need to stop |
| * anything for net-detect since the firmware is |
| * restarted anyway. This way, any sched scans that |
| * were running will be restarted when we resume. |
| */ |
| if (!unified_image) |
| return 0; |
| |
| /* If this is a unified image and we ran out of scans, |
| * we need to stop something. Prefer stopping regular |
| * scans, because the results are useless at this |
| * point, and we should be able to keep running |
| * another scheduled scan while suspended. |
| */ |
| if (mvm->scan_status & IWL_MVM_SCAN_REGULAR_MASK) |
| return iwl_mvm_scan_stop(mvm, IWL_MVM_SCAN_REGULAR, |
| true); |
| if (mvm->scan_status & IWL_MVM_SCAN_SCHED_MASK) |
| return iwl_mvm_scan_stop(mvm, IWL_MVM_SCAN_SCHED, |
| true); |
| /* Something is wrong if no scan was running but we |
| * ran out of scans. |
| */ |
| /* fall through */ |
| default: |
| WARN_ON(1); |
| break; |
| } |
| |
| return -EIO; |
| } |
| |
| #define SCAN_TIMEOUT 20000 |
| |
| void iwl_mvm_scan_timeout_wk(struct work_struct *work) |
| { |
| struct delayed_work *delayed_work = to_delayed_work(work); |
| struct iwl_mvm *mvm = container_of(delayed_work, struct iwl_mvm, |
| scan_timeout_dwork); |
| |
| IWL_ERR(mvm, "regular scan timed out\n"); |
| |
| iwl_force_nmi(mvm->trans); |
| } |
| |
| static void iwl_mvm_fill_scan_type(struct iwl_mvm *mvm, |
| struct iwl_mvm_scan_params *params, |
| struct ieee80211_vif *vif) |
| { |
| if (iwl_mvm_is_cdb_supported(mvm)) { |
| params->type = |
| iwl_mvm_get_scan_type_band(mvm, vif, |
| NL80211_BAND_2GHZ); |
| params->hb_type = |
| iwl_mvm_get_scan_type_band(mvm, vif, |
| NL80211_BAND_5GHZ); |
| } else { |
| params->type = iwl_mvm_get_scan_type(mvm, vif); |
| } |
| } |
| |
| struct iwl_scan_umac_handler { |
| u8 version; |
| int (*handler)(struct iwl_mvm *mvm, struct ieee80211_vif *vif, |
| struct iwl_mvm_scan_params *params, int type, int uid); |
| }; |
| |
| #define IWL_SCAN_UMAC_HANDLER(_ver) { \ |
| .version = _ver, \ |
| .handler = iwl_mvm_scan_umac_v##_ver, \ |
| } |
| |
| static const struct iwl_scan_umac_handler iwl_scan_umac_handlers[] = { |
| /* set the newest version first to shorten the list traverse time */ |
| IWL_SCAN_UMAC_HANDLER(13), |
| IWL_SCAN_UMAC_HANDLER(12), |
| IWL_SCAN_UMAC_HANDLER(11), |
| }; |
| |
| static int iwl_mvm_build_scan_cmd(struct iwl_mvm *mvm, |
| struct ieee80211_vif *vif, |
| struct iwl_host_cmd *hcmd, |
| struct iwl_mvm_scan_params *params, |
| int type) |
| { |
| int uid, i; |
| u8 scan_ver; |
| |
| lockdep_assert_held(&mvm->mutex); |
| memset(mvm->scan_cmd, 0, ksize(mvm->scan_cmd)); |
| |
| if (!fw_has_capa(&mvm->fw->ucode_capa, IWL_UCODE_TLV_CAPA_UMAC_SCAN)) { |
| hcmd->id = SCAN_OFFLOAD_REQUEST_CMD; |
| |
| return iwl_mvm_scan_lmac(mvm, vif, params); |
| } |
| |
| uid = iwl_mvm_scan_uid_by_status(mvm, 0); |
| if (uid < 0) |
| return uid; |
| |
| hcmd->id = iwl_cmd_id(SCAN_REQ_UMAC, IWL_ALWAYS_LONG_GROUP, 0); |
| |
| scan_ver = iwl_mvm_lookup_cmd_ver(mvm->fw, IWL_ALWAYS_LONG_GROUP, |
| SCAN_REQ_UMAC); |
| |
| for (i = 0; i < ARRAY_SIZE(iwl_scan_umac_handlers); i++) { |
| const struct iwl_scan_umac_handler *ver_handler = |
| &iwl_scan_umac_handlers[i]; |
| |
| if (ver_handler->version != scan_ver) |
| continue; |
| |
| return ver_handler->handler(mvm, vif, params, type, uid); |
| } |
| |
| return iwl_mvm_scan_umac(mvm, vif, params, type, uid); |
| } |
| |
| int iwl_mvm_reg_scan_start(struct iwl_mvm *mvm, struct ieee80211_vif *vif, |
| struct cfg80211_scan_request *req, |
| struct ieee80211_scan_ies *ies) |
| { |
| struct iwl_host_cmd hcmd = { |
| .len = { iwl_mvm_scan_size(mvm), }, |
| .data = { mvm->scan_cmd, }, |
| .dataflags = { IWL_HCMD_DFL_NOCOPY, }, |
| }; |
| struct iwl_mvm_scan_params params = {}; |
| int ret; |
| struct cfg80211_sched_scan_plan scan_plan = { .iterations = 1 }; |
| |
| lockdep_assert_held(&mvm->mutex); |
| |
| if (iwl_mvm_is_lar_supported(mvm) && !mvm->lar_regdom_set) { |
| IWL_ERR(mvm, "scan while LAR regdomain is not set\n"); |
| return -EBUSY; |
| } |
| |
| ret = iwl_mvm_check_running_scans(mvm, IWL_MVM_SCAN_REGULAR); |
| if (ret) |
| return ret; |
| |
| /* we should have failed registration if scan_cmd was NULL */ |
| if (WARN_ON(!mvm->scan_cmd)) |
| return -ENOMEM; |
| |
| if (!iwl_mvm_scan_fits(mvm, req->n_ssids, ies, req->n_channels)) |
| return -ENOBUFS; |
| |
| params.n_ssids = req->n_ssids; |
| params.flags = req->flags; |
| params.n_channels = req->n_channels; |
| params.delay = 0; |
| params.ssids = req->ssids; |
| params.channels = req->channels; |
| params.mac_addr = req->mac_addr; |
| params.mac_addr_mask = req->mac_addr_mask; |
| params.no_cck = req->no_cck; |
| params.pass_all = true; |
| params.n_match_sets = 0; |
| params.match_sets = NULL; |
| |
| params.scan_plans = &scan_plan; |
| params.n_scan_plans = 1; |
| |
| iwl_mvm_fill_scan_type(mvm, ¶ms, vif); |
| |
| ret = iwl_mvm_get_measurement_dwell(mvm, req, ¶ms); |
| if (ret < 0) |
| return ret; |
| |
| params.measurement_dwell = ret; |
| |
| iwl_mvm_build_scan_probe(mvm, vif, ies, ¶ms); |
| |
| ret = iwl_mvm_build_scan_cmd(mvm, vif, &hcmd, ¶ms, |
| IWL_MVM_SCAN_REGULAR); |
| |
| if (ret) |
| return ret; |
| |
| iwl_mvm_pause_tcm(mvm, false); |
| |
| ret = iwl_mvm_send_cmd(mvm, &hcmd); |
| if (ret) { |
| /* If the scan failed, it usually means that the FW was unable |
| * to allocate the time events. Warn on it, but maybe we |
| * should try to send the command again with different params. |
| */ |
| IWL_ERR(mvm, "Scan failed! ret %d\n", ret); |
| iwl_mvm_resume_tcm(mvm); |
| return ret; |
| } |
| |
| IWL_DEBUG_SCAN(mvm, "Scan request was sent successfully\n"); |
| mvm->scan_status |= IWL_MVM_SCAN_REGULAR; |
| mvm->scan_vif = iwl_mvm_vif_from_mac80211(vif); |
| |
| schedule_delayed_work(&mvm->scan_timeout_dwork, |
| msecs_to_jiffies(SCAN_TIMEOUT)); |
| |
| return 0; |
| } |
| |
| int iwl_mvm_sched_scan_start(struct iwl_mvm *mvm, |
| struct ieee80211_vif *vif, |
| struct cfg80211_sched_scan_request *req, |
| struct ieee80211_scan_ies *ies, |
| int type) |
| { |
| struct iwl_host_cmd hcmd = { |
| .len = { iwl_mvm_scan_size(mvm), }, |
| .data = { mvm->scan_cmd, }, |
| .dataflags = { IWL_HCMD_DFL_NOCOPY, }, |
| }; |
| struct iwl_mvm_scan_params params = {}; |
| int ret; |
| |
| lockdep_assert_held(&mvm->mutex); |
| |
| if (iwl_mvm_is_lar_supported(mvm) && !mvm->lar_regdom_set) { |
| IWL_ERR(mvm, "sched-scan while LAR regdomain is not set\n"); |
| return -EBUSY; |
| } |
| |
| ret = iwl_mvm_check_running_scans(mvm, type); |
| if (ret) |
| return ret; |
| |
| /* we should have failed registration if scan_cmd was NULL */ |
| if (WARN_ON(!mvm->scan_cmd)) |
| return -ENOMEM; |
| |
| if (!iwl_mvm_scan_fits(mvm, req->n_ssids, ies, req->n_channels)) |
| return -ENOBUFS; |
| |
| params.n_ssids = req->n_ssids; |
| params.flags = req->flags; |
| params.n_channels = req->n_channels; |
| params.ssids = req->ssids; |
| params.channels = req->channels; |
| params.mac_addr = req->mac_addr; |
| params.mac_addr_mask = req->mac_addr_mask; |
| params.no_cck = false; |
| params.pass_all = iwl_mvm_scan_pass_all(mvm, req); |
| params.n_match_sets = req->n_match_sets; |
| params.match_sets = req->match_sets; |
| if (!req->n_scan_plans) |
| return -EINVAL; |
| |
| params.n_scan_plans = req->n_scan_plans; |
| params.scan_plans = req->scan_plans; |
| |
| iwl_mvm_fill_scan_type(mvm, ¶ms, vif); |
| |
| /* In theory, LMAC scans can handle a 32-bit delay, but since |
| * waiting for over 18 hours to start the scan is a bit silly |
| * and to keep it aligned with UMAC scans (which only support |
| * 16-bit delays), trim it down to 16-bits. |
| */ |
| if (req->delay > U16_MAX) { |
| IWL_DEBUG_SCAN(mvm, |
| "delay value is > 16-bits, set to max possible\n"); |
| params.delay = U16_MAX; |
| } else { |
| params.delay = req->delay; |
| } |
| |
| ret = iwl_mvm_config_sched_scan_profiles(mvm, req); |
| if (ret) |
| return ret; |
| |
| iwl_mvm_build_scan_probe(mvm, vif, ies, ¶ms); |
| |
| ret = iwl_mvm_build_scan_cmd(mvm, vif, &hcmd, ¶ms, type); |
| |
| if (ret) |
| return ret; |
| |
| ret = iwl_mvm_send_cmd(mvm, &hcmd); |
| if (!ret) { |
| IWL_DEBUG_SCAN(mvm, |
| "Sched scan request was sent successfully\n"); |
| mvm->scan_status |= type; |
| } else { |
| /* If the scan failed, it usually means that the FW was unable |
| * to allocate the time events. Warn on it, but maybe we |
| * should try to send the command again with different params. |
| */ |
| IWL_ERR(mvm, "Sched scan failed! ret %d\n", ret); |
| } |
| |
| return ret; |
| } |
| |
| void iwl_mvm_rx_umac_scan_complete_notif(struct iwl_mvm *mvm, |
| struct iwl_rx_cmd_buffer *rxb) |
| { |
| struct iwl_rx_packet *pkt = rxb_addr(rxb); |
| struct iwl_umac_scan_complete *notif = (void *)pkt->data; |
| u32 uid = __le32_to_cpu(notif->uid); |
| bool aborted = (notif->status == IWL_SCAN_OFFLOAD_ABORTED); |
| |
| if (WARN_ON(!(mvm->scan_uid_status[uid] & mvm->scan_status))) |
| return; |
| |
| /* if the scan is already stopping, we don't need to notify mac80211 */ |
| if (mvm->scan_uid_status[uid] == IWL_MVM_SCAN_REGULAR) { |
| struct cfg80211_scan_info info = { |
| .aborted = aborted, |
| .scan_start_tsf = mvm->scan_start, |
| }; |
| |
| memcpy(info.tsf_bssid, mvm->scan_vif->bssid, ETH_ALEN); |
| ieee80211_scan_completed(mvm->hw, &info); |
| mvm->scan_vif = NULL; |
| cancel_delayed_work(&mvm->scan_timeout_dwork); |
| iwl_mvm_resume_tcm(mvm); |
| } else if (mvm->scan_uid_status[uid] == IWL_MVM_SCAN_SCHED) { |
| ieee80211_sched_scan_stopped(mvm->hw); |
| mvm->sched_scan_pass_all = SCHED_SCAN_PASS_ALL_DISABLED; |
| } |
| |
| mvm->scan_status &= ~mvm->scan_uid_status[uid]; |
| IWL_DEBUG_SCAN(mvm, |
| "Scan completed, uid %u type %u, status %s, EBS status %s\n", |
| uid, mvm->scan_uid_status[uid], |
| notif->status == IWL_SCAN_OFFLOAD_COMPLETED ? |
| "completed" : "aborted", |
| iwl_mvm_ebs_status_str(notif->ebs_status)); |
| IWL_DEBUG_SCAN(mvm, |
| "Last line %d, Last iteration %d, Time from last iteration %d\n", |
| notif->last_schedule, notif->last_iter, |
| __le32_to_cpu(notif->time_from_last_iter)); |
| |
| if (notif->ebs_status != IWL_SCAN_EBS_SUCCESS && |
| notif->ebs_status != IWL_SCAN_EBS_INACTIVE) |
| mvm->last_ebs_successful = false; |
| |
| mvm->scan_uid_status[uid] = 0; |
| } |
| |
| void iwl_mvm_rx_umac_scan_iter_complete_notif(struct iwl_mvm *mvm, |
| struct iwl_rx_cmd_buffer *rxb) |
| { |
| struct iwl_rx_packet *pkt = rxb_addr(rxb); |
| struct iwl_umac_scan_iter_complete_notif *notif = (void *)pkt->data; |
| |
| mvm->scan_start = le64_to_cpu(notif->start_tsf); |
| |
| IWL_DEBUG_SCAN(mvm, |
| "UMAC Scan iteration complete: status=0x%x scanned_channels=%d\n", |
| notif->status, notif->scanned_channels); |
| |
| if (mvm->sched_scan_pass_all == SCHED_SCAN_PASS_ALL_FOUND) { |
| IWL_DEBUG_SCAN(mvm, "Pass all scheduled scan results found\n"); |
| ieee80211_sched_scan_results(mvm->hw); |
| mvm->sched_scan_pass_all = SCHED_SCAN_PASS_ALL_ENABLED; |
| } |
| |
| IWL_DEBUG_SCAN(mvm, |
| "UMAC Scan iteration complete: scan started at %llu (TSF)\n", |
| mvm->scan_start); |
| } |
| |
| static int iwl_mvm_umac_scan_abort(struct iwl_mvm *mvm, int type) |
| { |
| struct iwl_umac_scan_abort cmd = {}; |
| int uid, ret; |
| |
| lockdep_assert_held(&mvm->mutex); |
| |
| /* We should always get a valid index here, because we already |
| * checked that this type of scan was running in the generic |
| * code. |
| */ |
| uid = iwl_mvm_scan_uid_by_status(mvm, type); |
| if (WARN_ON_ONCE(uid < 0)) |
| return uid; |
| |
| cmd.uid = cpu_to_le32(uid); |
| |
| IWL_DEBUG_SCAN(mvm, "Sending scan abort, uid %u\n", uid); |
| |
| ret = iwl_mvm_send_cmd_pdu(mvm, |
| iwl_cmd_id(SCAN_ABORT_UMAC, |
| IWL_ALWAYS_LONG_GROUP, 0), |
| 0, sizeof(cmd), &cmd); |
| if (!ret) |
| mvm->scan_uid_status[uid] = type << IWL_MVM_SCAN_STOPPING_SHIFT; |
| |
| return ret; |
| } |
| |
| static int iwl_mvm_scan_stop_wait(struct iwl_mvm *mvm, int type) |
| { |
| struct iwl_notification_wait wait_scan_done; |
| static const u16 scan_done_notif[] = { SCAN_COMPLETE_UMAC, |
| SCAN_OFFLOAD_COMPLETE, }; |
| int ret; |
| |
| lockdep_assert_held(&mvm->mutex); |
| |
| iwl_init_notification_wait(&mvm->notif_wait, &wait_scan_done, |
| scan_done_notif, |
| ARRAY_SIZE(scan_done_notif), |
| NULL, NULL); |
| |
| IWL_DEBUG_SCAN(mvm, "Preparing to stop scan, type %x\n", type); |
| |
| if (fw_has_capa(&mvm->fw->ucode_capa, IWL_UCODE_TLV_CAPA_UMAC_SCAN)) |
| ret = iwl_mvm_umac_scan_abort(mvm, type); |
| else |
| ret = iwl_mvm_lmac_scan_abort(mvm); |
| |
| if (ret) { |
| IWL_DEBUG_SCAN(mvm, "couldn't stop scan type %d\n", type); |
| iwl_remove_notification(&mvm->notif_wait, &wait_scan_done); |
| return ret; |
| } |
| |
| return iwl_wait_notification(&mvm->notif_wait, &wait_scan_done, |
| 1 * HZ); |
| } |
| |
| #define IWL_SCAN_REQ_UMAC_HANDLE_SIZE(_ver) { \ |
| case (_ver): return sizeof(struct iwl_scan_req_umac_v##_ver); \ |
| } |
| |
| static int iwl_scan_req_umac_get_size(u8 scan_ver) |
| { |
| switch (scan_ver) { |
| IWL_SCAN_REQ_UMAC_HANDLE_SIZE(13); |
| IWL_SCAN_REQ_UMAC_HANDLE_SIZE(12); |
| IWL_SCAN_REQ_UMAC_HANDLE_SIZE(11); |
| } |
| |
| return 0; |
| } |
| |
| int iwl_mvm_scan_size(struct iwl_mvm *mvm) |
| { |
| int base_size, tail_size; |
| u8 scan_ver = iwl_mvm_lookup_cmd_ver(mvm->fw, IWL_ALWAYS_LONG_GROUP, |
| SCAN_REQ_UMAC); |
| |
| base_size = iwl_scan_req_umac_get_size(scan_ver); |
| if (base_size) |
| return base_size; |
| |
| |
| if (iwl_mvm_is_adaptive_dwell_v2_supported(mvm)) |
| base_size = IWL_SCAN_REQ_UMAC_SIZE_V8; |
| else if (iwl_mvm_is_adaptive_dwell_supported(mvm)) |
| base_size = IWL_SCAN_REQ_UMAC_SIZE_V7; |
| else if (iwl_mvm_cdb_scan_api(mvm)) |
| base_size = IWL_SCAN_REQ_UMAC_SIZE_V6; |
| else |
| base_size = IWL_SCAN_REQ_UMAC_SIZE_V1; |
| |
| if (fw_has_capa(&mvm->fw->ucode_capa, IWL_UCODE_TLV_CAPA_UMAC_SCAN)) { |
| if (iwl_mvm_is_scan_ext_chan_supported(mvm)) |
| tail_size = sizeof(struct iwl_scan_req_umac_tail_v2); |
| else |
| tail_size = sizeof(struct iwl_scan_req_umac_tail_v1); |
| |
| return base_size + |
| sizeof(struct iwl_scan_channel_cfg_umac) * |
| mvm->fw->ucode_capa.n_scan_channels + |
| tail_size; |
| } |
| return sizeof(struct iwl_scan_req_lmac) + |
| sizeof(struct iwl_scan_channel_cfg_lmac) * |
| mvm->fw->ucode_capa.n_scan_channels + |
| sizeof(struct iwl_scan_probe_req_v1); |
| } |
| |
| /* |
| * This function is used in nic restart flow, to inform mac80211 about scans |
| * that was aborted by restart flow or by an assert. |
| */ |
| void iwl_mvm_report_scan_aborted(struct iwl_mvm *mvm) |
| { |
| if (fw_has_capa(&mvm->fw->ucode_capa, IWL_UCODE_TLV_CAPA_UMAC_SCAN)) { |
| int uid, i; |
| |
| uid = iwl_mvm_scan_uid_by_status(mvm, IWL_MVM_SCAN_REGULAR); |
| if (uid >= 0) { |
| struct cfg80211_scan_info info = { |
| .aborted = true, |
| }; |
| |
| ieee80211_scan_completed(mvm->hw, &info); |
| mvm->scan_uid_status[uid] = 0; |
| } |
| uid = iwl_mvm_scan_uid_by_status(mvm, IWL_MVM_SCAN_SCHED); |
| if (uid >= 0 && !mvm->fw_restart) { |
| ieee80211_sched_scan_stopped(mvm->hw); |
| mvm->sched_scan_pass_all = SCHED_SCAN_PASS_ALL_DISABLED; |
| mvm->scan_uid_status[uid] = 0; |
| } |
| |
| /* We shouldn't have any UIDs still set. Loop over all the |
| * UIDs to make sure there's nothing left there and warn if |
| * any is found. |
| */ |
| for (i = 0; i < mvm->max_scans; i++) { |
| if (WARN_ONCE(mvm->scan_uid_status[i], |
| "UMAC scan UID %d status was not cleaned\n", |
| i)) |
| mvm->scan_uid_status[i] = 0; |
| } |
| } else { |
| if (mvm->scan_status & IWL_MVM_SCAN_REGULAR) { |
| struct cfg80211_scan_info info = { |
| .aborted = true, |
| }; |
| |
| ieee80211_scan_completed(mvm->hw, &info); |
| } |
| |
| /* Sched scan will be restarted by mac80211 in |
| * restart_hw, so do not report if FW is about to be |
| * restarted. |
| */ |
| if ((mvm->scan_status & IWL_MVM_SCAN_SCHED) && |
| !mvm->fw_restart) { |
| ieee80211_sched_scan_stopped(mvm->hw); |
| mvm->sched_scan_pass_all = SCHED_SCAN_PASS_ALL_DISABLED; |
| } |
| } |
| } |
| |
| int iwl_mvm_scan_stop(struct iwl_mvm *mvm, int type, bool notify) |
| { |
| int ret; |
| |
| if (!(mvm->scan_status & type)) |
| return 0; |
| |
| if (iwl_mvm_is_radio_killed(mvm)) { |
| ret = 0; |
| goto out; |
| } |
| |
| ret = iwl_mvm_scan_stop_wait(mvm, type); |
| if (!ret) |
| mvm->scan_status |= type << IWL_MVM_SCAN_STOPPING_SHIFT; |
| out: |
| /* Clear the scan status so the next scan requests will |
| * succeed and mark the scan as stopping, so that the Rx |
| * handler doesn't do anything, as the scan was stopped from |
| * above. |
| */ |
| mvm->scan_status &= ~type; |
| |
| if (type == IWL_MVM_SCAN_REGULAR) { |
| cancel_delayed_work(&mvm->scan_timeout_dwork); |
| if (notify) { |
| struct cfg80211_scan_info info = { |
| .aborted = true, |
| }; |
| |
| ieee80211_scan_completed(mvm->hw, &info); |
| } |
| } else if (notify) { |
| ieee80211_sched_scan_stopped(mvm->hw); |
| mvm->sched_scan_pass_all = SCHED_SCAN_PASS_ALL_DISABLED; |
| } |
| |
| return ret; |
| } |