| Author | Tokens | Token Proportion | Commits | Commit Proportion |
|---|---|---|---|---|
| Luciano Coelho | 3799 | 21.95% | 48 | 19.67% |
| Ilan Peer | 2425 | 14.01% | 29 | 11.89% |
| David Spinadel | 2307 | 13.33% | 22 | 9.02% |
| Shahar S Matityahu | 1559 | 9.01% | 4 | 1.64% |
| Tova Mussai | 1178 | 6.81% | 6 | 2.46% |
| Johannes Berg | 1087 | 6.28% | 24 | 9.84% |
| Sara Sharon | 993 | 5.74% | 8 | 3.28% |
| Avraham Stern | 984 | 5.68% | 17 | 6.97% |
| Benjamin Berg | 878 | 5.07% | 2 | 0.82% |
| Ayala Beker | 832 | 4.81% | 18 | 7.38% |
| Alexander Bondar | 220 | 1.27% | 4 | 1.64% |
| Andrei Otcheretianski | 186 | 1.07% | 3 | 1.23% |
| Ron Rindjunsky | 176 | 1.02% | 1 | 0.41% |
| Roee Zamir | 152 | 0.88% | 3 | 1.23% |
| Miri Korenblit | 129 | 0.75% | 6 | 2.46% |
| Eliad Peller | 110 | 0.64% | 12 | 4.92% |
| Nathan Errera | 79 | 0.46% | 1 | 0.41% |
| Emmanuel Grumbach | 67 | 0.39% | 8 | 3.28% |
| Haim Dreyfuss | 36 | 0.21% | 5 | 2.05% |
| striebit | 32 | 0.18% | 2 | 0.82% |
| Arik Nemtsov | 24 | 0.14% | 6 | 2.46% |
| Oren Givon | 13 | 0.08% | 1 | 0.41% |
| Gregory Greenman | 12 | 0.07% | 1 | 0.41% |
| Mordechai Goodstein | 8 | 0.05% | 3 | 1.23% |
| Gil Adam | 6 | 0.03% | 1 | 0.41% |
| Kees Cook | 5 | 0.03% | 2 | 0.82% |
| Moshe Harel | 3 | 0.02% | 1 | 0.41% |
| Wey-Yi Guy | 3 | 0.02% | 1 | 0.41% |
| Gustavo A. R. Silva | 2 | 0.01% | 1 | 0.41% |
| Nicholas Krause | 2 | 0.01% | 1 | 0.41% |
| Eran Harary | 1 | 0.01% | 1 | 0.41% |
| Colin Ian King | 1 | 0.01% | 1 | 0.41% |
| Chaya Rachel Ivgy | 1 | 0.01% | 1 | 0.41% |
| Total | 17310 | 244 |
// SPDX-License-Identifier: GPL-2.0 OR BSD-3-Clause /* * Copyright (C) 2012-2014, 2018-2024 Intel Corporation * Copyright (C) 2013-2015 Intel Mobile Communications GmbH * Copyright (C) 2016-2017 Intel Deutschland GmbH */ #include <linux/etherdevice.h> #include <net/mac80211.h> #include <linux/crc32.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 /* 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 number of APs override mask for p2p friendly GO */ #define IWL_SCAN_ADWELL_N_APS_GO_FRIENDLY_BIT BIT(20) /* adaptive dwell number of APs override mask for social channels */ #define IWL_SCAN_ADWELL_N_APS_SOCIAL_CHS_BIT BIT(21) /* adaptive dwell number of APs override for p2p friendly GO channels */ #define IWL_SCAN_ADWELL_N_APS_GO_FRIENDLY 10 /* adaptive dwell number of APs override for social channels */ #define IWL_SCAN_ADWELL_N_APS_SOCIAL_CHS 2 /* minimal number of 2GHz and 5GHz channels in the regular scan request */ #define IWL_MVM_6GHZ_PASSIVE_SCAN_MIN_CHANS 4 /* Number of iterations on the channel for mei filtered scan */ #define IWL_MEI_SCAN_NUM_ITER 5U 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; bool iter_notif; struct cfg80211_scan_6ghz_params *scan_6ghz_params; u32 n_6ghz_params; bool scan_6ghz; bool enable_6ghz_passive; bool respect_p2p_go, respect_p2p_go_hb; s8 tsf_report_link_id; u8 bssid[ETH_ALEN] __aligned(2); }; 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_V1 | tx_ant); else return cpu_to_le32(IWL_RATE_6M_PLCP | tx_ant); } 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_mvm_scan_iter_data { u32 global_cnt; struct ieee80211_vif *current_vif; bool is_dcm_with_p2p_go; }; static void iwl_mvm_scan_iterator(void *_data, u8 *mac, struct ieee80211_vif *vif) { struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif); struct iwl_mvm_scan_iter_data *data = _data; struct iwl_mvm_vif *curr_mvmvif; if (vif->type != NL80211_IFTYPE_P2P_DEVICE && mvmvif->deflink.phy_ctxt && mvmvif->deflink.phy_ctxt->id < NUM_PHY_CTX) data->global_cnt += 1; if (!data->current_vif || vif == data->current_vif) return; curr_mvmvif = iwl_mvm_vif_from_mac80211(data->current_vif); if (vif->type == NL80211_IFTYPE_AP && vif->p2p && mvmvif->deflink.phy_ctxt && curr_mvmvif->deflink.phy_ctxt && mvmvif->deflink.phy_ctxt->id != curr_mvmvif->deflink.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) { struct iwl_mvm_scan_iter_data data = { .current_vif = vif, .is_dcm_with_p2p_go = false, .global_cnt = 0, }; /* * A scanning AP interface probably wants to generate a survey to do * ACS (automatic channel selection). * Force a non-fragmented scan in that case. */ if (vif && ieee80211_vif_type_p2p(vif) == NL80211_IFTYPE_AP) return IWL_SCAN_TYPE_WILD; ieee80211_iterate_active_interfaces_atomic(mvm->hw, IEEE80211_IFACE_ITER_NORMAL, iwl_mvm_scan_iterator, &data); if (!data.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 P2P GO set all scan requests as * fast-balance scan */ if (vif && vif->type == NL80211_IFTYPE_STATION && 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 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_v1 *profile_cfg_v1; struct iwl_scan_offload_blocklist *blocklist; struct iwl_scan_offload_profile_cfg_data *data; int max_profiles = iwl_umac_scan_get_max_profiles(mvm->fw); int profile_cfg_size = sizeof(*data) + sizeof(*profile) * max_profiles; struct iwl_host_cmd cmd = { .id = SCAN_OFFLOAD_UPDATE_PROFILES_CMD, .len[1] = profile_cfg_size, .dataflags[0] = IWL_HCMD_DFL_NOCOPY, .dataflags[1] = IWL_HCMD_DFL_NOCOPY, }; int blocklist_len; int i; int ret; if (WARN_ON(req->n_match_sets > max_profiles)) return -EIO; if (mvm->fw->ucode_capa.flags & IWL_UCODE_TLV_FLAGS_SHORT_BL) blocklist_len = IWL_SCAN_SHORT_BLACKLIST_LEN; else blocklist_len = IWL_SCAN_MAX_BLACKLIST_LEN; blocklist = kcalloc(blocklist_len, sizeof(*blocklist), GFP_KERNEL); if (!blocklist) return -ENOMEM; profile_cfg_v1 = kzalloc(profile_cfg_size, GFP_KERNEL); if (!profile_cfg_v1) { ret = -ENOMEM; goto free_blocklist; } cmd.data[0] = blocklist; cmd.len[0] = sizeof(*blocklist) * blocklist_len; cmd.data[1] = profile_cfg_v1; /* if max_profile is MAX_PROFILES_V2, we have the new API */ if (max_profiles == IWL_SCAN_MAX_PROFILES_V2) { struct iwl_scan_offload_profile_cfg *profile_cfg = (struct iwl_scan_offload_profile_cfg *)profile_cfg_v1; data = &profile_cfg->data; } else { data = &profile_cfg_v1->data; } /* No blocklist configuration */ data->num_profiles = req->n_match_sets; data->active_clients = SCAN_CLIENT_SCHED_SCAN; data->pass_match = SCAN_CLIENT_SCHED_SCAN; data->match_notify = SCAN_CLIENT_SCHED_SCAN; if (!req->n_match_sets || !req->match_sets[0].ssid.ssid_len) data->any_beacon_notify = SCAN_CLIENT_SCHED_SCAN; for (i = 0; i < req->n_match_sets; i++) { profile = &profile_cfg_v1->profiles[i]; profile->ssid_index = i; /* Support any cipher and auth algorithm */ profile->unicast_cipher = 0xff; profile->auth_alg = IWL_AUTH_ALGO_UNSUPPORTED | IWL_AUTH_ALGO_NONE | IWL_AUTH_ALGO_PSK | IWL_AUTH_ALGO_8021X | IWL_AUTH_ALGO_SAE | IWL_AUTH_ALGO_8021X_SHA384 | IWL_AUTH_ALGO_OWE; 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_v1); free_blocklist: kfree(blocklist); 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); if (!iwl_mvm_has_new_station_api(mvm->fw)) { tx_cmd[0].sta_id = mvm->aux_sta.sta_id; tx_cmd[1].sta_id = mvm->aux_sta.sta_id; /* * Fw doesn't use this sta anymore, pending deprecation via HOST API * change */ } else { tx_cmd[0].sta_id = 0xff; tx_cmd[1].sta_id = 0xff; } 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); } 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); ether_addr_copy(frame->bssid, params->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->ies[NL80211_BAND_6GHZ], ies->len[NL80211_BAND_6GHZ]); params->preq.band_data[2].offset = cpu_to_le16(pos - params->preq.buf); params->preq.band_data[2].len = cpu_to_le16(ies->len[NL80211_BAND_6GHZ]); pos += ies->len[NL80211_BAND_6GHZ]; 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 * 6. the VIF is not an AP interface (scan wants survey results) */ 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)) && ieee80211_vif_type_p2p(vif) != NL80211_IFTYPE_AP); } 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); /* This function should not be called when using ADD_STA ver >=12 */ WARN_ON_ONCE(iwl_mvm_has_new_station_api(mvm->fw)); 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); /* This function should not be called when using ADD_STA ver >=12 */ WARN_ON_ONCE(iwl_mvm_has_new_station_api(mvm->fw)); 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 = WIDE_ID(IWL_ALWAYS_LONG_GROUP, SCAN_CFG_CMD), }; 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 += mvm->fw->ucode_capa.n_scan_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 = WIDE_ID(IWL_ALWAYS_LONG_GROUP, SCAN_CFG_CMD), .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)); if (!iwl_mvm_has_new_station_api(mvm->fw)) { cfg.bcast_sta_id = mvm->aux_sta.sta_id; } else if (iwl_fw_lookup_cmd_ver(mvm->fw, SCAN_CFG_CMD, 0) < 5) { /* * Fw doesn't use this sta anymore. Deprecated on SCAN_CFG_CMD * version 5. */ cfg.bcast_sta_id = 0xff; } 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 = IWL_SCAN_DWELL_ACTIVE; passive_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->n_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 = 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(int type) { if (type == IWL_MVM_SCAN_REGULAR) return IWL_SCAN_PRIORITY_EXT_6; if (type == IWL_MVM_SCAN_INT_MLO) return IWL_SCAN_PRIORITY_EXT_4; return IWL_SCAN_PRIORITY_EXT_2; } static void iwl_mvm_scan_umac_dwell_v11(struct iwl_mvm *mvm, struct iwl_scan_general_params_v11 *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 = IWL_SCAN_DWELL_ACTIVE; passive_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->n_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 }, { .start_idx = 51, .end_idx = 111, .first_channel_id = 1, .last_channel_id = 241, .channel_spacing_shift = 2, .band = PHY_BAND_6 }, }; 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 const u8 p2p_go_friendly_chs[] = { 36, 40, 44, 48, 149, 153, 157, 161, 165, }; static const u8 social_chs[] = { 1, 6, 11 }; 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; 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 u32 iwl_mvm_scan_ch_n_aps_flag(enum nl80211_iftype vif_type, u8 ch_id) { int i; u32 flags = 0; if (vif_type != NL80211_IFTYPE_P2P_DEVICE) goto out; for (i = 0; i < ARRAY_SIZE(p2p_go_friendly_chs); i++) { if (p2p_go_friendly_chs[i] == ch_id) { flags |= IWL_SCAN_ADWELL_N_APS_GO_FRIENDLY_BIT; break; } } if (flags) goto out; for (i = 0; i < ARRAY_SIZE(social_chs); i++) { if (social_chs[i] == ch_id) { flags |= IWL_SCAN_ADWELL_N_APS_SOCIAL_CHS_BIT; break; } } out: return flags; } 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 void iwl_mvm_umac_scan_cfg_channels_v7(struct iwl_mvm *mvm, struct ieee80211_channel **channels, struct iwl_scan_channel_params_v7 *cp, int n_channels, u32 flags, enum nl80211_iftype vif_type, u32 version) { 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]; u32 n_aps_flag = iwl_mvm_scan_ch_n_aps_flag(vif_type, channels[i]->hw_value); u8 iwl_band = iwl_mvm_phy_band_from_nl80211(band); cfg->flags = cpu_to_le32(flags | n_aps_flag); cfg->v2.channel_num = channels[i]->hw_value; if (cfg80211_channel_is_psc(channels[i])) cfg->flags = 0; cfg->v2.iter_count = 1; cfg->v2.iter_interval = 0; if (version < 17) cfg->v2.band = iwl_band; else cfg->flags |= cpu_to_le32((iwl_band << IWL_CHAN_CFG_FLAGS_BAND_POS)); } } static void iwl_mvm_umac_scan_fill_6g_chan_list(struct iwl_mvm *mvm, struct iwl_mvm_scan_params *params, struct iwl_scan_probe_params_v4 *pp) { int j, idex_s = 0, idex_b = 0; struct cfg80211_scan_6ghz_params *scan_6ghz_params = params->scan_6ghz_params; bool hidden_supported = fw_has_capa(&mvm->fw->ucode_capa, IWL_UCODE_TLV_CAPA_HIDDEN_6GHZ_SCAN); for (j = 0; j < params->n_ssids && idex_s < SCAN_SHORT_SSID_MAX_SIZE; j++) { if (!params->ssids[j].ssid_len) continue; pp->short_ssid[idex_s] = cpu_to_le32(~crc32_le(~0, params->ssids[j].ssid, params->ssids[j].ssid_len)); if (hidden_supported) { pp->direct_scan[idex_s].id = WLAN_EID_SSID; pp->direct_scan[idex_s].len = params->ssids[j].ssid_len; memcpy(pp->direct_scan[idex_s].ssid, params->ssids[j].ssid, params->ssids[j].ssid_len); } idex_s++; } /* * Populate the arrays of the short SSIDs and the BSSIDs using the 6GHz * collocated parameters. This might not be optimal, as this processing * does not (yet) correspond to the actual channels, so it is possible * that some entries would be left out. * * TODO: improve this logic. */ for (j = 0; j < params->n_6ghz_params; j++) { int k; /* First, try to place the short SSID */ if (scan_6ghz_params[j].short_ssid_valid) { for (k = 0; k < idex_s; k++) { if (pp->short_ssid[k] == cpu_to_le32(scan_6ghz_params[j].short_ssid)) break; } if (k == idex_s && idex_s < SCAN_SHORT_SSID_MAX_SIZE) { pp->short_ssid[idex_s++] = cpu_to_le32(scan_6ghz_params[j].short_ssid); } } /* try to place BSSID for the same entry */ for (k = 0; k < idex_b; k++) { if (!memcmp(&pp->bssid_array[k], scan_6ghz_params[j].bssid, ETH_ALEN)) break; } if (k == idex_b && idex_b < SCAN_BSSID_MAX_SIZE && !WARN_ONCE(!is_valid_ether_addr(scan_6ghz_params[j].bssid), "scan: invalid BSSID at index %u, index_b=%u\n", j, idex_b)) { memcpy(&pp->bssid_array[idex_b++], scan_6ghz_params[j].bssid, ETH_ALEN); } } pp->short_ssid_num = idex_s; pp->bssid_num = idex_b; } /* TODO: this function can be merged with iwl_mvm_scan_umac_fill_ch_p_v7 */ static u32 iwl_mvm_umac_scan_cfg_channels_v7_6g(struct iwl_mvm *mvm, struct iwl_mvm_scan_params *params, u32 n_channels, struct iwl_scan_probe_params_v4 *pp, struct iwl_scan_channel_params_v7 *cp, enum nl80211_iftype vif_type, u32 version) { int i; struct cfg80211_scan_6ghz_params *scan_6ghz_params = params->scan_6ghz_params; u32 ch_cnt; for (i = 0, ch_cnt = 0; i < params->n_channels; i++) { struct iwl_scan_channel_cfg_umac *cfg = &cp->channel_config[ch_cnt]; u32 s_ssid_bitmap = 0, bssid_bitmap = 0, flags = 0; u8 j, k, n_s_ssids = 0, n_bssids = 0; u8 max_s_ssids, max_bssids; bool force_passive = false, found = false, allow_passive = true, unsolicited_probe_on_chan = false, psc_no_listen = false; s8 psd_20 = IEEE80211_RNR_TBTT_PARAMS_PSD_RESERVED; /* * Avoid performing passive scan on non PSC channels unless the * scan is specifically a passive scan, i.e., no SSIDs * configured in the scan command. */ if (!cfg80211_channel_is_psc(params->channels[i]) && !params->n_6ghz_params && params->n_ssids) continue; cfg->v1.channel_num = params->channels[i]->hw_value; if (version < 17) cfg->v2.band = PHY_BAND_6; else cfg->flags |= cpu_to_le32(PHY_BAND_6 << IWL_CHAN_CFG_FLAGS_BAND_POS); cfg->v5.iter_count = 1; cfg->v5.iter_interval = 0; for (j = 0; j < params->n_6ghz_params; j++) { s8 tmp_psd_20; if (!(scan_6ghz_params[j].channel_idx == i)) continue; unsolicited_probe_on_chan |= scan_6ghz_params[j].unsolicited_probe; /* Use the highest PSD value allowed as advertised by * APs for this channel */ tmp_psd_20 = scan_6ghz_params[j].psd_20; if (tmp_psd_20 != IEEE80211_RNR_TBTT_PARAMS_PSD_RESERVED && (psd_20 == IEEE80211_RNR_TBTT_PARAMS_PSD_RESERVED || psd_20 < tmp_psd_20)) psd_20 = tmp_psd_20; psc_no_listen |= scan_6ghz_params[j].psc_no_listen; } /* * In the following cases apply passive scan: * 1. Non fragmented scan: * - PSC channel with NO_LISTEN_FLAG on should be treated * like non PSC channel * - Non PSC channel with more than 3 short SSIDs or more * than 9 BSSIDs. * - Non PSC Channel with unsolicited probe response and * more than 2 short SSIDs or more than 6 BSSIDs. * - PSC channel with more than 2 short SSIDs or more than * 6 BSSIDs. * 3. Fragmented scan: * - PSC channel with more than 1 SSID or 3 BSSIDs. * - Non PSC channel with more than 2 SSIDs or 6 BSSIDs. * - Non PSC channel with unsolicited probe response and * more than 1 SSID or more than 3 BSSIDs. */ if (!iwl_mvm_is_scan_fragmented(params->type)) { if (!cfg80211_channel_is_psc(params->channels[i]) || psc_no_listen) { if (unsolicited_probe_on_chan) { max_s_ssids = 2; max_bssids = 6; } else { max_s_ssids = 3; max_bssids = 9; } } else { max_s_ssids = 2; max_bssids = 6; } } else if (cfg80211_channel_is_psc(params->channels[i])) { max_s_ssids = 1; max_bssids = 3; } else { if (unsolicited_probe_on_chan) { max_s_ssids = 1; max_bssids = 3; } else { max_s_ssids = 2; max_bssids = 6; } } /* * The optimize the scan time, i.e., reduce the scan dwell time * on each channel, the below logic tries to set 3 direct BSSID * probe requests for each broadcast probe request with a short * SSID. * TODO: improve this logic */ for (j = 0; j < params->n_6ghz_params; j++) { if (!(scan_6ghz_params[j].channel_idx == i)) continue; found = false; for (k = 0; k < pp->short_ssid_num && n_s_ssids < max_s_ssids; k++) { if (!scan_6ghz_params[j].unsolicited_probe && le32_to_cpu(pp->short_ssid[k]) == scan_6ghz_params[j].short_ssid) { /* Relevant short SSID bit set */ if (s_ssid_bitmap & BIT(k)) { found = true; break; } /* * Prefer creating BSSID entries unless * the short SSID probe can be done in * the same channel dwell iteration. * * We also need to create a short SSID * entry for any hidden AP. */ if (3 * n_s_ssids > n_bssids && !pp->direct_scan[k].len) break; /* Hidden AP, cannot do passive scan */ if (pp->direct_scan[k].len) allow_passive = false; s_ssid_bitmap |= BIT(k); n_s_ssids++; found = true; break; } } if (found) continue; for (k = 0; k < pp->bssid_num; k++) { if (!memcmp(&pp->bssid_array[k], scan_6ghz_params[j].bssid, ETH_ALEN)) { if (!(bssid_bitmap & BIT(k))) { if (n_bssids < max_bssids) { bssid_bitmap |= BIT(k); n_bssids++; } else { force_passive = TRUE; } } break; } } } if (cfg80211_channel_is_psc(params->channels[i]) && psc_no_listen) flags |= IWL_UHB_CHAN_CFG_FLAG_PSC_CHAN_NO_LISTEN; if (unsolicited_probe_on_chan) flags |= IWL_UHB_CHAN_CFG_FLAG_UNSOLICITED_PROBE_RES; if ((allow_passive && force_passive) || (!(bssid_bitmap | s_ssid_bitmap) && !cfg80211_channel_is_psc(params->channels[i]))) flags |= IWL_UHB_CHAN_CFG_FLAG_FORCE_PASSIVE; else flags |= bssid_bitmap | (s_ssid_bitmap << 16); cfg->flags |= cpu_to_le32(flags); if (version >= 17) cfg->v5.psd_20 = psd_20; ch_cnt++; } if (params->n_channels > ch_cnt) IWL_DEBUG_SCAN(mvm, "6GHz: reducing number channels: (%u->%u)\n", params->n_channels, ch_cnt); return ch_cnt; } 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_cdb_supported(mvm) && iwl_mvm_is_scan_fragmented(params->type)) || (iwl_mvm_is_cdb_supported(mvm) && iwl_mvm_is_scan_fragmented(params->hb_type))) flags |= IWL_SCAN_CHANNEL_FLAG_EBS_FRAG; /* * force EBS in case the scan is a fragmented and there is a need to take P2P * GO operation into consideration during scan operation. */ if ((!iwl_mvm_is_cdb_supported(mvm) && iwl_mvm_is_scan_fragmented(params->type) && params->respect_p2p_go) || (iwl_mvm_is_cdb_supported(mvm) && iwl_mvm_is_scan_fragmented(params->hb_type) && params->respect_p2p_go_hb)) { IWL_DEBUG_SCAN(mvm, "Respect P2P GO. Force EBS\n"); flags |= IWL_SCAN_CHANNEL_FLAG_FORCE_EBS; } return flags; } static void iwl_mvm_scan_6ghz_passive_scan(struct iwl_mvm *mvm, struct iwl_mvm_scan_params *params, struct ieee80211_vif *vif) { struct ieee80211_supported_band *sband = &mvm->nvm_data->bands[NL80211_BAND_6GHZ]; u32 n_disabled, i; params->enable_6ghz_passive = false; if (params->scan_6ghz) return; if (!fw_has_capa(&mvm->fw->ucode_capa, IWL_UCODE_TLV_CAPA_PASSIVE_6GHZ_SCAN)) { IWL_DEBUG_SCAN(mvm, "6GHz passive scan: Not supported by FW\n"); return; } /* 6GHz passive scan allowed only on station interface */ if (vif->type != NL80211_IFTYPE_STATION) { IWL_DEBUG_SCAN(mvm, "6GHz passive scan: not station interface\n"); return; } /* * 6GHz passive scan is allowed in a defined time interval following HW * reset or resume flow, or while not associated and a large interval * has passed since the last 6GHz passive scan. */ if ((vif->cfg.assoc || time_after(mvm->last_6ghz_passive_scan_jiffies + (IWL_MVM_6GHZ_PASSIVE_SCAN_TIMEOUT * HZ), jiffies)) && (time_before(mvm->last_reset_or_resume_time_jiffies + (IWL_MVM_6GHZ_PASSIVE_SCAN_ASSOC_TIMEOUT * HZ), jiffies))) { IWL_DEBUG_SCAN(mvm, "6GHz passive scan: %s\n", vif->cfg.assoc ? "associated" : "timeout did not expire"); return; } /* not enough channels in the regular scan request */ if (params->n_channels < IWL_MVM_6GHZ_PASSIVE_SCAN_MIN_CHANS) { IWL_DEBUG_SCAN(mvm, "6GHz passive scan: not enough channels\n"); return; } for (i = 0; i < params->n_ssids; i++) { if (!params->ssids[i].ssid_len) break; } /* not a wildcard scan, so cannot enable passive 6GHz scan */ if (i == params->n_ssids) { IWL_DEBUG_SCAN(mvm, "6GHz passive scan: no wildcard SSID\n"); return; } if (!sband || !sband->n_channels) { IWL_DEBUG_SCAN(mvm, "6GHz passive scan: no 6GHz channels\n"); return; } for (i = 0, n_disabled = 0; i < sband->n_channels; i++) { if (sband->channels[i].flags & (IEEE80211_CHAN_DISABLED)) n_disabled++; } /* * Not all the 6GHz channels are disabled, so no need for 6GHz passive * scan */ if (n_disabled != sband->n_channels) { IWL_DEBUG_SCAN(mvm, "6GHz passive scan: 6GHz channels enabled\n"); return; } /* all conditions to enable 6ghz passive scan are satisfied */ IWL_DEBUG_SCAN(mvm, "6GHz passive scan: can be enabled\n"); params->enable_6ghz_passive = true; } 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 no direct SSIDs are provided perform a passive scan. Otherwise, * if there is a single SSID which is not the broadcast SSID, assume * that the scan is intended for roaming purposes and thus enable Rx on * all chains to improve chances of hearing the beacons/probe responses. */ if (params->n_ssids == 0) flags |= IWL_UMAC_SCAN_GEN_FLAGS_V2_FORCE_PASSIVE; else if (params->n_ssids == 1 && params->ssids[0].ssid_len) flags |= IWL_UMAC_SCAN_GEN_FLAGS_V2_USE_ALL_RX_CHAINS; 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->iter_notif || 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; if ((type == IWL_MVM_SCAN_SCHED || type == IWL_MVM_SCAN_NETDETECT) && params->flags & NL80211_SCAN_FLAG_COLOCATED_6GHZ) flags |= IWL_UMAC_SCAN_GEN_FLAGS_V2_TRIGGER_UHB_SCAN; if (params->enable_6ghz_passive) flags |= IWL_UMAC_SCAN_GEN_FLAGS_V2_6GHZ_PASSIVE_SCAN; if (iwl_mvm_is_oce_supported(mvm) && (params->flags & (NL80211_SCAN_FLAG_ACCEPT_BCAST_PROBE_RESP | NL80211_SCAN_FLAG_OCE_PROBE_REQ_HIGH_TX_RATE | NL80211_SCAN_FLAG_FILS_MAX_CHANNEL_TIME))) flags |= IWL_UMAC_SCAN_GEN_FLAGS_V2_OCE; return flags; } static u8 iwl_mvm_scan_umac_flags2(struct iwl_mvm *mvm, struct iwl_mvm_scan_params *params, struct ieee80211_vif *vif, int type, u16 gen_flags) { u8 flags = 0; if (iwl_mvm_is_cdb_supported(mvm)) { if (params->respect_p2p_go) flags |= IWL_UMAC_SCAN_GEN_PARAMS_FLAGS2_RESPECT_P2P_GO_LB; if (params->respect_p2p_go_hb) flags |= IWL_UMAC_SCAN_GEN_PARAMS_FLAGS2_RESPECT_P2P_GO_HB; } else { if (params->respect_p2p_go) flags = IWL_UMAC_SCAN_GEN_PARAMS_FLAGS2_RESPECT_P2P_GO_LB | IWL_UMAC_SCAN_GEN_PARAMS_FLAGS2_RESPECT_P2P_GO_HB; } if (params->scan_6ghz && fw_has_capa(&mvm->fw->ucode_capa, IWL_UCODE_TLV_CAPA_SCAN_DONT_TOGGLE_ANT)) flags |= IWL_UMAC_SCAN_GEN_PARAMS_FLAGS2_DONT_TOGGLE_ANT; /* Passive and AP interface -> ACS (automatic channel selection) */ if (gen_flags & IWL_UMAC_SCAN_GEN_FLAGS_V2_FORCE_PASSIVE && ieee80211_vif_type_p2p(vif) == NL80211_IFTYPE_AP && iwl_fw_lookup_notif_ver(mvm->fw, SCAN_GROUP, CHANNEL_SURVEY_NOTIF, 0) >= 1) flags |= IWL_UMAC_SCAN_GEN_FLAGS2_COLLECT_CHANNEL_STATS; 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->iter_notif) 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 = (u8 *)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); 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_v12(struct iwl_mvm *mvm, struct iwl_mvm_scan_params *params, struct ieee80211_vif *vif, struct iwl_scan_general_params_v11 *gp, u16 gen_flags, u8 gen_flags2, u32 version) { struct iwl_mvm_vif *scan_vif = iwl_mvm_vif_from_mac80211(vif); iwl_mvm_scan_umac_dwell_v11(mvm, gp, params); IWL_DEBUG_SCAN(mvm, "General: flags=0x%x, flags2=0x%x\n", gen_flags, gen_flags2); gp->flags = cpu_to_le16(gen_flags); gp->flags2 = gen_flags2; 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; mvm->scan_link_id = 0; if (version < 16) { gp->scan_start_mac_or_link_id = scan_vif->id; } else { struct iwl_mvm_vif_link_info *link_info = scan_vif->link[params->tsf_report_link_id]; mvm->scan_link_id = params->tsf_report_link_id; if (!WARN_ON(!link_info)) gp->scan_start_mac_or_link_id = link_info->fw_link_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_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_N_APS_GO_FRIENDLY; iwl_mvm_umac_scan_cfg_channels_v4(mvm, params->channels, cp, params->n_channels, channel_cfg_flags, vif->type); } static void iwl_mvm_scan_umac_fill_ch_p_v7(struct iwl_mvm *mvm, struct iwl_mvm_scan_params *params, struct ieee80211_vif *vif, struct iwl_scan_channel_params_v7 *cp, u32 channel_cfg_flags, u32 version) { cp->flags = iwl_mvm_scan_umac_chan_flags_v2(mvm, params, vif); cp->count = params->n_channels; cp->n_aps_override[0] = IWL_SCAN_ADWELL_N_APS_GO_FRIENDLY; cp->n_aps_override[1] = IWL_SCAN_ADWELL_N_APS_SOCIAL_CHS; iwl_mvm_umac_scan_cfg_channels_v7(mvm, params->channels, cp, params->n_channels, channel_cfg_flags, vif->type, version); if (params->enable_6ghz_passive) { struct ieee80211_supported_band *sband = &mvm->nvm_data->bands[NL80211_BAND_6GHZ]; u32 i; for (i = 0; i < sband->n_channels; i++) { struct ieee80211_channel *channel = &sband->channels[i]; struct iwl_scan_channel_cfg_umac *cfg = &cp->channel_config[cp->count]; if (!cfg80211_channel_is_psc(channel)) continue; cfg->v5.channel_num = channel->hw_value; cfg->v5.iter_count = 1; cfg->v5.iter_interval = 0; if (version < 17) { cfg->flags = 0; cfg->v2.band = PHY_BAND_6; } else { cfg->flags = cpu_to_le32(PHY_BAND_6 << IWL_CHAN_CFG_FLAGS_BAND_POS); cfg->v5.psd_20 = IEEE80211_RNR_TBTT_PARAMS_PSD_RESERVED; } cp->count++; } } } 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; cmd->ooc_priority = cpu_to_le32(iwl_mvm_scan_umac_ooc_priority(type)); 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_v12(mvm, params, vif, &scan_p->general_params, gen_flags, 0, 12); 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_v14_and_above(struct iwl_mvm *mvm, struct ieee80211_vif *vif, struct iwl_mvm_scan_params *params, int type, int uid, u32 version) { struct iwl_scan_req_umac_v17 *cmd = mvm->scan_cmd; struct iwl_scan_req_params_v17 *scan_p = &cmd->scan_params; struct iwl_scan_channel_params_v7 *cp = &scan_p->channel_params; struct iwl_scan_probe_params_v4 *pb = &scan_p->probe_params; int ret; u16 gen_flags; u8 gen_flags2; u32 bitmap_ssid = 0; cmd->ooc_priority = cpu_to_le32(iwl_mvm_scan_umac_ooc_priority(type)); cmd->uid = cpu_to_le32(uid); gen_flags = iwl_mvm_scan_umac_flags_v2(mvm, params, vif, type); if (version >= 15) gen_flags2 = iwl_mvm_scan_umac_flags2(mvm, params, vif, type, gen_flags); else gen_flags2 = 0; iwl_mvm_scan_umac_fill_general_p_v12(mvm, params, vif, &scan_p->general_params, gen_flags, gen_flags2, version); ret = iwl_mvm_fill_scan_sched_params(params, scan_p->periodic_params.schedule, &scan_p->periodic_params.delay); if (ret) return ret; if (!params->scan_6ghz) { iwl_mvm_scan_umac_fill_probe_p_v4(params, &scan_p->probe_params, &bitmap_ssid); iwl_mvm_scan_umac_fill_ch_p_v7(mvm, params, vif, &scan_p->channel_params, bitmap_ssid, version); return 0; } else { pb->preq = params->preq; } cp->flags = iwl_mvm_scan_umac_chan_flags_v2(mvm, params, vif); cp->n_aps_override[0] = IWL_SCAN_ADWELL_N_APS_GO_FRIENDLY; cp->n_aps_override[1] = IWL_SCAN_ADWELL_N_APS_SOCIAL_CHS; iwl_mvm_umac_scan_fill_6g_chan_list(mvm, params, pb); cp->count = iwl_mvm_umac_scan_cfg_channels_v7_6g(mvm, params, params->n_channels, pb, cp, vif->type, version); if (!cp->count) return -EINVAL; if (!params->n_ssids || (params->n_ssids == 1 && !params->ssids[0].ssid_len)) cp->flags |= IWL_SCAN_CHANNEL_FLAG_6G_PSC_NO_FILTER; return 0; } static int iwl_mvm_scan_umac_v14(struct iwl_mvm *mvm, struct ieee80211_vif *vif, struct iwl_mvm_scan_params *params, int type, int uid) { return iwl_mvm_scan_umac_v14_and_above(mvm, vif, params, type, uid, 14); } static int iwl_mvm_scan_umac_v15(struct iwl_mvm *mvm, struct ieee80211_vif *vif, struct iwl_mvm_scan_params *params, int type, int uid) { return iwl_mvm_scan_umac_v14_and_above(mvm, vif, params, type, uid, 15); } static int iwl_mvm_scan_umac_v16(struct iwl_mvm *mvm, struct ieee80211_vif *vif, struct iwl_mvm_scan_params *params, int type, int uid) { return iwl_mvm_scan_umac_v14_and_above(mvm, vif, params, type, uid, 16); } static int iwl_mvm_scan_umac_v17(struct iwl_mvm *mvm, struct ieee80211_vif *vif, struct iwl_mvm_scan_params *params, int type, int uid) { return iwl_mvm_scan_umac_v14_and_above(mvm, vif, params, type, uid, 17); } 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. */ fallthrough; default: WARN_ON(1); break; } return -EIO; } #define SCAN_TIMEOUT 30000 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(17), IWL_SCAN_UMAC_HANDLER(16), IWL_SCAN_UMAC_HANDLER(15), IWL_SCAN_UMAC_HANDLER(14), IWL_SCAN_UMAC_HANDLER(12), }; static void iwl_mvm_mei_scan_work(struct work_struct *wk) { struct iwl_mei_scan_filter *scan_filter = container_of(wk, struct iwl_mei_scan_filter, scan_work); struct iwl_mvm *mvm = container_of(scan_filter, struct iwl_mvm, mei_scan_filter); struct iwl_mvm_csme_conn_info *info; struct sk_buff *skb; u8 bssid[ETH_ALEN]; mutex_lock(&mvm->mutex); info = iwl_mvm_get_csme_conn_info(mvm); memcpy(bssid, info->conn_info.bssid, ETH_ALEN); mutex_unlock(&mvm->mutex); while ((skb = skb_dequeue(&scan_filter->scan_res))) { struct ieee80211_mgmt *mgmt = (void *)skb->data; if (!memcmp(mgmt->bssid, bssid, ETH_ALEN)) ieee80211_rx_irqsafe(mvm->hw, skb); else kfree_skb(skb); } } void iwl_mvm_mei_scan_filter_init(struct iwl_mei_scan_filter *mei_scan_filter) { skb_queue_head_init(&mei_scan_filter->scan_res); INIT_WORK(&mei_scan_filter->scan_work, iwl_mvm_mei_scan_work); } /* In case CSME is connected and has link protection set, this function will * override the scan request to scan only the associated channel and only for * the associated SSID. */ static void iwl_mvm_mei_limited_scan(struct iwl_mvm *mvm, struct iwl_mvm_scan_params *params) { struct iwl_mvm_csme_conn_info *info = iwl_mvm_get_csme_conn_info(mvm); struct iwl_mei_conn_info *conn_info; struct ieee80211_channel *chan; int scan_iters, i; if (!info) { IWL_DEBUG_SCAN(mvm, "mei_limited_scan: no connection info\n"); return; } conn_info = &info->conn_info; if (!info->conn_info.lp_state || !info->conn_info.ssid_len) return; if (!params->n_channels || !params->n_ssids) return; mvm->mei_scan_filter.is_mei_limited_scan = true; chan = ieee80211_get_channel(mvm->hw->wiphy, ieee80211_channel_to_frequency(conn_info->channel, conn_info->band)); if (!chan) { IWL_DEBUG_SCAN(mvm, "Failed to get CSME channel (chan=%u band=%u)\n", conn_info->channel, conn_info->band); return; } /* The mei filtered scan must find the AP, otherwise CSME will * take the NIC ownership. Add several iterations on the channel to * make the scan more robust. */ scan_iters = min(IWL_MEI_SCAN_NUM_ITER, params->n_channels); params->n_channels = scan_iters; for (i = 0; i < scan_iters; i++) params->channels[i] = chan; IWL_DEBUG_SCAN(mvm, "Mei scan: num iterations=%u\n", scan_iters); params->n_ssids = 1; params->ssids[0].ssid_len = conn_info->ssid_len; memcpy(params->ssids[0].ssid, conn_info->ssid, conn_info->ssid_len); } 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, err; u8 scan_ver; lockdep_assert_held(&mvm->mutex); memset(mvm->scan_cmd, 0, mvm->scan_cmd_size); iwl_mvm_mei_limited_scan(mvm, params); 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 = WIDE_ID(IWL_ALWAYS_LONG_GROUP, SCAN_REQ_UMAC); scan_ver = iwl_fw_lookup_cmd_ver(mvm->fw, SCAN_REQ_UMAC, IWL_FW_CMD_VER_UNKNOWN); 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; err = ver_handler->handler(mvm, vif, params, type, uid); return err ? : uid; } err = iwl_mvm_scan_umac(mvm, vif, params, type, uid); if (err) return err; return uid; } struct iwl_mvm_scan_respect_p2p_go_iter_data { struct ieee80211_vif *current_vif; bool p2p_go; enum nl80211_band band; }; static void iwl_mvm_scan_respect_p2p_go_iter(void *_data, u8 *mac, struct ieee80211_vif *vif) { struct iwl_mvm_scan_respect_p2p_go_iter_data *data = _data; struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif); /* exclude the given vif */ if (vif == data->current_vif) return; if (vif->type == NL80211_IFTYPE_AP && vif->p2p) { u32 link_id; for (link_id = 0; link_id < ARRAY_SIZE(mvmvif->link); link_id++) { struct iwl_mvm_vif_link_info *link = mvmvif->link[link_id]; if (link && link->phy_ctxt->id < NUM_PHY_CTX && (data->band == NUM_NL80211_BANDS || link->phy_ctxt->channel->band == data->band)) { data->p2p_go = true; break; } } } } static bool _iwl_mvm_get_respect_p2p_go(struct iwl_mvm *mvm, struct ieee80211_vif *vif, bool low_latency, enum nl80211_band band) { struct iwl_mvm_scan_respect_p2p_go_iter_data data = { .current_vif = vif, .p2p_go = false, .band = band, }; if (!low_latency) return false; ieee80211_iterate_active_interfaces_atomic(mvm->hw, IEEE80211_IFACE_ITER_NORMAL, iwl_mvm_scan_respect_p2p_go_iter, &data); return data.p2p_go; } static bool iwl_mvm_get_respect_p2p_go_band(struct iwl_mvm *mvm, struct ieee80211_vif *vif, enum nl80211_band band) { bool low_latency = iwl_mvm_low_latency_band(mvm, band); return _iwl_mvm_get_respect_p2p_go(mvm, vif, low_latency, band); } static bool iwl_mvm_get_respect_p2p_go(struct iwl_mvm *mvm, struct ieee80211_vif *vif) { bool low_latency = iwl_mvm_low_latency(mvm); return _iwl_mvm_get_respect_p2p_go(mvm, vif, low_latency, NUM_NL80211_BANDS); } static void iwl_mvm_fill_respect_p2p_go(struct iwl_mvm *mvm, struct iwl_mvm_scan_params *params, struct ieee80211_vif *vif) { if (iwl_mvm_is_cdb_supported(mvm)) { params->respect_p2p_go = iwl_mvm_get_respect_p2p_go_band(mvm, vif, NL80211_BAND_2GHZ); params->respect_p2p_go_hb = iwl_mvm_get_respect_p2p_go_band(mvm, vif, NL80211_BAND_5GHZ); } else { params->respect_p2p_go = iwl_mvm_get_respect_p2p_go(mvm, vif); } } static int _iwl_mvm_single_scan_start(struct iwl_mvm *mvm, struct ieee80211_vif *vif, struct cfg80211_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, uid; 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, 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.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; ether_addr_copy(params.bssid, req->bssid); params.scan_plans = &scan_plan; params.n_scan_plans = 1; params.n_6ghz_params = req->n_6ghz_params; params.scan_6ghz_params = req->scan_6ghz_params; params.scan_6ghz = req->scan_6ghz; iwl_mvm_fill_scan_type(mvm, ¶ms, vif); iwl_mvm_fill_respect_p2p_go(mvm, ¶ms, vif); if (req->duration) params.iter_notif = true; params.tsf_report_link_id = req->tsf_report_link_id; if (params.tsf_report_link_id < 0) { if (vif->active_links) params.tsf_report_link_id = __ffs(vif->active_links); else params.tsf_report_link_id = 0; } iwl_mvm_build_scan_probe(mvm, vif, ies, ¶ms); iwl_mvm_scan_6ghz_passive_scan(mvm, ¶ms, vif); uid = iwl_mvm_build_scan_cmd(mvm, vif, &hcmd, ¶ms, type); if (uid < 0) return uid; 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 send success: type=%u, uid=%u\n", type, uid); mvm->scan_uid_status[uid] = type; mvm->scan_status |= type; if (type == 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)); } if (params.enable_6ghz_passive) mvm->last_6ghz_passive_scan_jiffies = jiffies; return 0; } int iwl_mvm_reg_scan_start(struct iwl_mvm *mvm, struct ieee80211_vif *vif, struct cfg80211_scan_request *req, struct ieee80211_scan_ies *ies) { return _iwl_mvm_single_scan_start(mvm, vif, req, ies, IWL_MVM_SCAN_REGULAR); } 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, uid; int i, j; bool non_psc_included = false; 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; 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; eth_broadcast_addr(params.bssid); 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); iwl_mvm_fill_respect_p2p_go(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); /* for 6 GHZ band only PSC channels need to be added */ for (i = 0; i < params.n_channels; i++) { struct ieee80211_channel *channel = params.channels[i]; if (channel->band == NL80211_BAND_6GHZ && !cfg80211_channel_is_psc(channel)) { non_psc_included = true; break; } } if (non_psc_included) { params.channels = kmemdup(params.channels, sizeof(params.channels[0]) * params.n_channels, GFP_KERNEL); if (!params.channels) return -ENOMEM; for (i = j = 0; i < params.n_channels; i++) { if (params.channels[i]->band == NL80211_BAND_6GHZ && !cfg80211_channel_is_psc(params.channels[i])) continue; params.channels[j++] = params.channels[i]; } params.n_channels = j; } if (non_psc_included && !iwl_mvm_scan_fits(mvm, req->n_ssids, ies, params.n_channels)) { kfree(params.channels); return -ENOBUFS; } uid = iwl_mvm_build_scan_cmd(mvm, vif, &hcmd, ¶ms, type); if (non_psc_included) kfree(params.channels); if (uid < 0) return uid; ret = iwl_mvm_send_cmd(mvm, &hcmd); if (!ret) { IWL_DEBUG_SCAN(mvm, "Sched scan request send success: type=%u, uid=%u\n", type, uid); mvm->scan_uid_status[uid] = type; 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); mvm->sched_scan_pass_all = SCHED_SCAN_PASS_ALL_DISABLED; } 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); bool select_links = false; mvm->mei_scan_filter.is_mei_limited_scan = false; IWL_DEBUG_SCAN(mvm, "Scan completed: uid=%u type=%u, status=%s, EBS=%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, "Scan completed: scan_status=0x%x\n", mvm->scan_status); IWL_DEBUG_SCAN(mvm, "Scan completed: line=%u, iter=%u, elapsed time=%u\n", notif->last_schedule, notif->last_iter, __le32_to_cpu(notif->time_from_last_iter)); 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, }; struct iwl_mvm_vif *scan_vif = mvm->scan_vif; struct iwl_mvm_vif_link_info *link_info = scan_vif->link[mvm->scan_link_id]; /* It is possible that by the time the scan is complete the link * was already removed and is not valid. */ if (link_info) memcpy(info.tsf_bssid, link_info->bssid, ETH_ALEN); else IWL_DEBUG_SCAN(mvm, "Scan link is no longer valid\n"); 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; } else if (mvm->scan_uid_status[uid] == IWL_MVM_SCAN_INT_MLO) { IWL_DEBUG_SCAN(mvm, "Internal MLO scan completed\n"); /* * Other scan types won't necessarily scan for the MLD links channels. * Therefore, only select links after successful internal scan. */ select_links = notif->status == IWL_SCAN_OFFLOAD_COMPLETED; } mvm->scan_status &= ~mvm->scan_uid_status[uid]; IWL_DEBUG_SCAN(mvm, "Scan completed: after update: scan_status=0x%x\n", mvm->scan_status); 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; if (select_links) wiphy_work_queue(mvm->hw->wiphy, &mvm->trig_link_selection_wk); } 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, WIDE_ID(IWL_ALWAYS_LONG_GROUP, SCAN_ABORT_UMAC), CMD_SEND_IN_RFKILL, sizeof(cmd), &cmd); if (!ret) mvm->scan_uid_status[uid] = type << IWL_MVM_SCAN_STOPPING_SHIFT; IWL_DEBUG_SCAN(mvm, "Scan abort: ret=%d\n", ret); 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); } static size_t iwl_scan_req_umac_get_size(u8 scan_ver) { switch (scan_ver) { case 12: return sizeof(struct iwl_scan_req_umac_v12); case 14: case 15: case 16: case 17: return sizeof(struct iwl_scan_req_umac_v17); } return 0; } size_t iwl_mvm_scan_size(struct iwl_mvm *mvm) { int base_size, tail_size; u8 scan_ver = iwl_fw_lookup_cmd_ver(mvm->fw, SCAN_REQ_UMAC, IWL_FW_CMD_VER_UNKNOWN); 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, }; cancel_delayed_work(&mvm->scan_timeout_dwork); 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) { /* Sched scan will be restarted by mac80211 in * restart_hw, so do not report if FW is about to be * restarted. */ if (!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; } uid = iwl_mvm_scan_uid_by_status(mvm, IWL_MVM_SCAN_INT_MLO); if (uid >= 0) { IWL_DEBUG_SCAN(mvm, "Internal MLO scan aborted\n"); mvm->scan_uid_status[uid] = 0; } uid = iwl_mvm_scan_uid_by_status(mvm, IWL_MVM_SCAN_STOPPING_REGULAR); if (uid >= 0) mvm->scan_uid_status[uid] = 0; uid = iwl_mvm_scan_uid_by_status(mvm, IWL_MVM_SCAN_STOPPING_SCHED); if (uid >= 0) mvm->scan_uid_status[uid] = 0; uid = iwl_mvm_scan_uid_by_status(mvm, IWL_MVM_SCAN_STOPPING_INT_MLO); if (uid >= 0) 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, }; cancel_delayed_work(&mvm->scan_timeout_dwork); 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; IWL_DEBUG_SCAN(mvm, "Request to stop scan: type=0x%x, status=0x%x\n", type, mvm->scan_status); if (!(mvm->scan_status & type)) return 0; if (!test_bit(STATUS_DEVICE_ENABLED, &mvm->trans->status)) { ret = 0; goto out; } ret = iwl_mvm_scan_stop_wait(mvm, type); if (!ret) mvm->scan_status |= type << IWL_MVM_SCAN_STOPPING_SHIFT; else IWL_DEBUG_SCAN(mvm, "Failed to stop scan\n"); 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; } static int iwl_mvm_int_mlo_scan_start(struct iwl_mvm *mvm, struct ieee80211_vif *vif, struct ieee80211_channel **channels, size_t n_channels) { struct cfg80211_scan_request *req = NULL; struct ieee80211_scan_ies ies = {}; size_t size, i; int ret; lockdep_assert_held(&mvm->mutex); IWL_DEBUG_SCAN(mvm, "Starting Internal MLO scan: n_channels=%zu\n", n_channels); if (!vif->cfg.assoc || !ieee80211_vif_is_mld(vif)) return -EINVAL; size = struct_size(req, channels, n_channels); req = kzalloc(size, GFP_KERNEL); if (!req) return -ENOMEM; /* set the requested channels */ for (i = 0; i < n_channels; i++) req->channels[i] = channels[i]; req->n_channels = n_channels; /* set the rates */ for (i = 0; i < NUM_NL80211_BANDS; i++) if (mvm->hw->wiphy->bands[i]) req->rates[i] = (1 << mvm->hw->wiphy->bands[i]->n_bitrates) - 1; req->wdev = ieee80211_vif_to_wdev(vif); req->wiphy = mvm->hw->wiphy; req->scan_start = jiffies; req->tsf_report_link_id = -1; ret = _iwl_mvm_single_scan_start(mvm, vif, req, &ies, IWL_MVM_SCAN_INT_MLO); kfree(req); IWL_DEBUG_SCAN(mvm, "Internal MLO scan: ret=%d\n", ret); return ret; } int iwl_mvm_int_mlo_scan(struct iwl_mvm *mvm, struct ieee80211_vif *vif) { struct ieee80211_channel *channels[IEEE80211_MLD_MAX_NUM_LINKS]; unsigned long usable_links = ieee80211_vif_usable_links(vif); size_t n_channels = 0; u8 link_id; lockdep_assert_held(&mvm->mutex); if (mvm->scan_status & IWL_MVM_SCAN_INT_MLO) { IWL_DEBUG_SCAN(mvm, "Internal MLO scan is already running\n"); return -EBUSY; } rcu_read_lock(); for_each_set_bit(link_id, &usable_links, IEEE80211_MLD_MAX_NUM_LINKS) { struct ieee80211_bss_conf *link_conf = rcu_dereference(vif->link_conf[link_id]); if (WARN_ON_ONCE(!link_conf)) continue; channels[n_channels++] = link_conf->chanreq.oper.chan; } rcu_read_unlock(); if (!n_channels) return -EINVAL; return iwl_mvm_int_mlo_scan_start(mvm, vif, channels, n_channels); } static int iwl_mvm_chanidx_from_phy(struct iwl_mvm *mvm, enum nl80211_band band, u16 phy_chan_num) { struct ieee80211_supported_band *sband = mvm->hw->wiphy->bands[band]; int chan_idx; if (WARN_ON_ONCE(!sband)) return -EINVAL; for (chan_idx = 0; chan_idx < sband->n_channels; chan_idx++) { struct ieee80211_channel *channel = &sband->channels[chan_idx]; if (channel->hw_value == phy_chan_num) return chan_idx; } return -EINVAL; } static u32 iwl_mvm_div_by_db(u32 value, u8 db) { /* * 2^32 * 10**(i / 10) for i = [1, 10], skipping 0 and simply stopping * at 10 dB and looping instead of using a much larger table. * * Using 64 bit math is overkill, but means the helper does not require * a limit on the input range. */ static const u32 db_to_val[] = { 0xcb59185e, 0xa1866ba8, 0x804dce7a, 0x65ea59fe, 0x50f44d89, 0x404de61f, 0x331426af, 0x2892c18b, 0x203a7e5b, 0x1999999a, }; while (value && db > 0) { u8 change = min_t(u8, db, ARRAY_SIZE(db_to_val)); value = (((u64)value) * db_to_val[change - 1]) >> 32; db -= change; } return value; } VISIBLE_IF_IWLWIFI_KUNIT s8 iwl_mvm_average_dbm_values(const struct iwl_umac_scan_channel_survey_notif *notif) { s8 average_magnitude; u32 average_factor; s8 sum_magnitude = -128; u32 sum_factor = 0; int i, count = 0; /* * To properly average the decibel values (signal values given in dBm) * we need to do the math in linear space. Doing a linear average of * dB (dBm) values is a bit annoying though due to the large range of * at least -10 to -110 dBm that will not fit into a 32 bit integer. * * A 64 bit integer should be sufficient, but then we still have the * problem that there are no directly usable utility functions * available. * * So, lets not deal with that and instead do much of the calculation * with a 16.16 fixed point integer along with a base in dBm. 16.16 bit * gives us plenty of head-room for adding up a few values and even * doing some math on it. And the tail should be accurate enough too * (1/2^16 is somewhere around -48 dB, so effectively zero). * * i.e. the real value of sum is: * sum = sum_factor / 2^16 * 10^(sum_magnitude / 10) mW * * However, that does mean we need to be able to bring two values to * a common base, so we need a helper for that. * * Note that this function takes an input with unsigned negative dBm * values but returns a signed dBm (i.e. a negative value). */ for (i = 0; i < ARRAY_SIZE(notif->noise); i++) { s8 val_magnitude; u32 val_factor; if (notif->noise[i] == 0xff) continue; val_factor = 0x10000; val_magnitude = -notif->noise[i]; if (val_magnitude <= sum_magnitude) { u8 div_db = sum_magnitude - val_magnitude; val_factor = iwl_mvm_div_by_db(val_factor, div_db); val_magnitude = sum_magnitude; } else { u8 div_db = val_magnitude - sum_magnitude; sum_factor = iwl_mvm_div_by_db(sum_factor, div_db); sum_magnitude = val_magnitude; } sum_factor += val_factor; count++; } /* No valid noise measurement, return a very high noise level */ if (count == 0) return 0; average_magnitude = sum_magnitude; average_factor = sum_factor / count; /* * average_factor will be a number smaller than 1.0 (0x10000) at this * point. What we need to do now is to adjust average_magnitude so that * average_factor is between -0.5 dB and 0.5 dB. * * Just do -1 dB steps and find the point where * -0.5 dB * -i dB = 0x10000 * 10^(-0.5/10) / i dB * = div_by_db(0xe429, i) * is smaller than average_factor. */ for (i = 0; average_factor < iwl_mvm_div_by_db(0xe429, i); i++) { /* nothing */ } return average_magnitude - i; } EXPORT_SYMBOL_IF_IWLWIFI_KUNIT(iwl_mvm_average_dbm_values); void iwl_mvm_rx_channel_survey_notif(struct iwl_mvm *mvm, struct iwl_rx_cmd_buffer *rxb) { struct iwl_rx_packet *pkt = rxb_addr(rxb); const struct iwl_umac_scan_channel_survey_notif *notif = (void *)pkt->data; struct iwl_mvm_acs_survey_channel *info; enum nl80211_band band; int chan_idx; lockdep_assert_held(&mvm->mutex); if (!mvm->acs_survey) { size_t n_channels = 0; for (band = 0; band < NUM_NL80211_BANDS; band++) { if (!mvm->hw->wiphy->bands[band]) continue; n_channels += mvm->hw->wiphy->bands[band]->n_channels; } mvm->acs_survey = kzalloc(struct_size(mvm->acs_survey, channels, n_channels), GFP_KERNEL); if (!mvm->acs_survey) return; mvm->acs_survey->n_channels = n_channels; n_channels = 0; for (band = 0; band < NUM_NL80211_BANDS; band++) { if (!mvm->hw->wiphy->bands[band]) continue; mvm->acs_survey->bands[band] = &mvm->acs_survey->channels[n_channels]; n_channels += mvm->hw->wiphy->bands[band]->n_channels; } } band = iwl_mvm_nl80211_band_from_phy(le32_to_cpu(notif->band)); chan_idx = iwl_mvm_chanidx_from_phy(mvm, band, le32_to_cpu(notif->channel)); if (WARN_ON_ONCE(chan_idx < 0)) return; IWL_DEBUG_SCAN(mvm, "channel survey received for freq %d\n", mvm->hw->wiphy->bands[band]->channels[chan_idx].center_freq); info = &mvm->acs_survey->bands[band][chan_idx]; /* Times are all in ms */ info->time = le32_to_cpu(notif->active_time); info->time_busy = le32_to_cpu(notif->busy_time); info->time_rx = le32_to_cpu(notif->rx_time); info->time_tx = le32_to_cpu(notif->tx_time); info->noise = iwl_mvm_average_dbm_values(notif); }
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