diff options
Diffstat (limited to 'drivers/net/wireless/intel/iwlwifi/mvm/scan.c')
| -rw-r--r-- | drivers/net/wireless/intel/iwlwifi/mvm/scan.c | 128 |
1 files changed, 128 insertions, 0 deletions
diff --git a/drivers/net/wireless/intel/iwlwifi/mvm/scan.c b/drivers/net/wireless/intel/iwlwifi/mvm/scan.c index caf87f320094..5a0696c44f6d 100644 --- a/drivers/net/wireless/intel/iwlwifi/mvm/scan.c +++ b/drivers/net/wireless/intel/iwlwifi/mvm/scan.c @@ -43,6 +43,9 @@ /* 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 + struct iwl_mvm_scan_timing_params { u32 suspend_time; u32 max_out_time; @@ -94,6 +97,7 @@ struct iwl_mvm_scan_params { struct cfg80211_scan_6ghz_params *scan_6ghz_params; u32 n_6ghz_params; bool scan_6ghz; + bool enable_6ghz_passive; }; static inline void *iwl_mvm_get_scan_req_umac_data(struct iwl_mvm *mvm) @@ -1873,6 +1877,98 @@ static u8 iwl_mvm_scan_umac_chan_flags_v2(struct iwl_mvm *mvm, 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 while associated in a defined time + * interval following HW reset or resume flow + */ + if (vif->bss_conf.assoc && + (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: associated\n"); + return; + } + + /* No need for 6GHz passive scan if not enough time elapsed */ + if (time_after(mvm->last_6ghz_passive_scan_jiffies + + (IWL_MVM_6GHZ_PASSIVE_SCAN_TIMEOUT * HZ), jiffies)) { + IWL_DEBUG_SCAN(mvm, + "6GHz passive scan: timeout did not expire\n"); + 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, @@ -1911,6 +2007,9 @@ static u16 iwl_mvm_scan_umac_flags_v2(struct iwl_mvm *mvm, 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; + return flags; } @@ -2183,6 +2282,30 @@ iwl_mvm_scan_umac_fill_ch_p_v6(struct iwl_mvm *mvm, params->n_channels, channel_cfg_flags, vif->type); + + 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->flags = 0; + cfg->v2.channel_num = channel->hw_value; + cfg->v2.band = PHY_BAND_6; + cfg->v2.iter_count = 1; + cfg->v2.iter_interval = 0; + cp->count++; + } + } } static int iwl_mvm_scan_umac_v12(struct iwl_mvm *mvm, struct ieee80211_vif *vif, @@ -2500,6 +2623,8 @@ int iwl_mvm_reg_scan_start(struct iwl_mvm *mvm, struct ieee80211_vif *vif, 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, IWL_MVM_SCAN_REGULAR); @@ -2524,6 +2649,9 @@ int iwl_mvm_reg_scan_start(struct iwl_mvm *mvm, struct ieee80211_vif *vif, mvm->scan_status |= IWL_MVM_SCAN_REGULAR; mvm->scan_vif = iwl_mvm_vif_from_mac80211(vif); + if (params.enable_6ghz_passive) + mvm->last_6ghz_passive_scan_jiffies = jiffies; + schedule_delayed_work(&mvm->scan_timeout_dwork, msecs_to_jiffies(SCAN_TIMEOUT)); |