diff options
author | Andrei Otcheretianski <andrei.otcheretianski@intel.com> | 2013-07-21 14:23:59 (GMT) |
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committer | Johannes Berg <johannes.berg@intel.com> | 2013-08-16 10:12:24 (GMT) |
commit | a20fd398666dbf5cdee3fe97722350cc10619c84 (patch) | |
tree | a70433b643ebb44a00a611b1c297e901144435a4 /drivers/net/wireless/iwlwifi/mvm/rx.c | |
parent | eafe25e0afaf45a4e38f9b3560ac774a2395c695 (diff) | |
download | linux-fsl-qoriq-a20fd398666dbf5cdee3fe97722350cc10619c84.tar.xz |
iwlwifi: mvm: Implement CQM offloading
Use beacon statistics notification to track RSSI.
Notify mac80211 when the tresholds are crossed.
The roaming treshold is configured to be
equal to cqm_thold. If the beacon filtering command
is not supported by fw fall back and use mac80211
mechanism.
Signed-off-by: Andrei Otcheretianski <andrei.otcheretianski@intel.com>
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
Diffstat (limited to 'drivers/net/wireless/iwlwifi/mvm/rx.c')
-rw-r--r-- | drivers/net/wireless/iwlwifi/mvm/rx.c | 61 |
1 files changed, 60 insertions, 1 deletions
diff --git a/drivers/net/wireless/iwlwifi/mvm/rx.c b/drivers/net/wireless/iwlwifi/mvm/rx.c index ee6547d..2a8cb5a 100644 --- a/drivers/net/wireless/iwlwifi/mvm/rx.c +++ b/drivers/net/wireless/iwlwifi/mvm/rx.c @@ -396,11 +396,62 @@ static void iwl_mvm_update_rx_statistics(struct iwl_mvm *mvm, memcpy(&mvm->rx_stats, &stats->rx, sizeof(struct mvm_statistics_rx)); } +struct iwl_mvm_stat_data { + struct iwl_notif_statistics *stats; + struct iwl_mvm *mvm; +}; + +static void iwl_mvm_stat_iterator(void *_data, u8 *mac, + struct ieee80211_vif *vif) +{ + struct iwl_mvm_stat_data *data = _data; + struct iwl_notif_statistics *stats = data->stats; + struct iwl_mvm *mvm = data->mvm; + int sig = -stats->general.beacon_filter_average_energy; + int last_event; + int thold = vif->bss_conf.cqm_rssi_thold; + int hyst = vif->bss_conf.cqm_rssi_hyst; + u16 id = le32_to_cpu(stats->rx.general.mac_id); + struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif); + + if (mvmvif->id != id) + return; + + if (vif->type != NL80211_IFTYPE_STATION) + return; + + mvmvif->bf_data.ave_beacon_signal = sig; + + if (!(vif->driver_flags & IEEE80211_VIF_SUPPORTS_CQM_RSSI)) + return; + + /* CQM Notification */ + last_event = mvmvif->bf_data.last_cqm_event; + if (thold && sig < thold && (last_event == 0 || + sig < last_event - hyst)) { + mvmvif->bf_data.last_cqm_event = sig; + IWL_DEBUG_RX(mvm, "cqm_iterator cqm low %d\n", + sig); + ieee80211_cqm_rssi_notify( + vif, + NL80211_CQM_RSSI_THRESHOLD_EVENT_LOW, + GFP_KERNEL); + } else if (sig > thold && + (last_event == 0 || sig > last_event + hyst)) { + mvmvif->bf_data.last_cqm_event = sig; + IWL_DEBUG_RX(mvm, "cqm_iterator cqm high %d\n", + sig); + ieee80211_cqm_rssi_notify( + vif, + NL80211_CQM_RSSI_THRESHOLD_EVENT_HIGH, + GFP_KERNEL); + } +} + /* * iwl_mvm_rx_statistics - STATISTICS_NOTIFICATION handler * * TODO: This handler is implemented partially. - * It only gets the NIC's temperature. */ int iwl_mvm_rx_statistics(struct iwl_mvm *mvm, struct iwl_rx_cmd_buffer *rxb, @@ -409,6 +460,10 @@ int iwl_mvm_rx_statistics(struct iwl_mvm *mvm, struct iwl_rx_packet *pkt = rxb_addr(rxb); struct iwl_notif_statistics *stats = (void *)&pkt->data; struct mvm_statistics_general_common *common = &stats->general.common; + struct iwl_mvm_stat_data data = { + .stats = stats, + .mvm = mvm, + }; if (mvm->temperature != le32_to_cpu(common->temperature)) { mvm->temperature = le32_to_cpu(common->temperature); @@ -416,5 +471,9 @@ int iwl_mvm_rx_statistics(struct iwl_mvm *mvm, } iwl_mvm_update_rx_statistics(mvm, stats); + ieee80211_iterate_active_interfaces(mvm->hw, + IEEE80211_IFACE_ITER_NORMAL, + iwl_mvm_stat_iterator, + &data); return 0; } |