From: Emmanuel Grumbach Date: Sun, 30 Jun 2019 12:40:19 +0000 (+0300) Subject: iwlwifi: mvm: simplify the channel switch flow for newer firmware X-Git-Tag: v5.4-rc1~131^2~61^2^2~38 X-Git-Url: http://review.tizen.org/git/?a=commitdiff_plain;h=0202bcf0e36a51dd2ccdae3e729de02e4286630a;p=platform%2Fkernel%2Flinux-rpi.git iwlwifi: mvm: simplify the channel switch flow for newer firmware Any firmware that supports the new channel switch flow is able to close / re-open the queues when needed. It takes into account the channel switch mode etc... Don't open / close the queues or enable / disable beacon abort before and after the channel switch in case the firmware is able to do this by itself. Signed-off-by: Emmanuel Grumbach Signed-off-by: Luca Coelho --- diff --git a/drivers/net/wireless/intel/iwlwifi/mvm/mac-ctxt.c b/drivers/net/wireless/intel/iwlwifi/mvm/mac-ctxt.c index fe776e3..8fa3564 100644 --- a/drivers/net/wireless/intel/iwlwifi/mvm/mac-ctxt.c +++ b/drivers/net/wireless/intel/iwlwifi/mvm/mac-ctxt.c @@ -1594,7 +1594,9 @@ void iwl_mvm_channel_switch_noa_notif(struct iwl_mvm *mvm, RCU_INIT_POINTER(mvm->csa_vif, NULL); return; case NL80211_IFTYPE_STATION: - iwl_mvm_csa_client_absent(mvm, vif); + if (!fw_has_capa(&mvm->fw->ucode_capa, + IWL_UCODE_TLV_CAPA_CHANNEL_SWITCH_CMD)) + iwl_mvm_csa_client_absent(mvm, vif); cancel_delayed_work(&mvmvif->csa_work); ieee80211_chswitch_done(vif, true); break; diff --git a/drivers/net/wireless/intel/iwlwifi/mvm/mac80211.c b/drivers/net/wireless/intel/iwlwifi/mvm/mac80211.c index 73302fe..b8d8250 100644 --- a/drivers/net/wireless/intel/iwlwifi/mvm/mac80211.c +++ b/drivers/net/wireless/intel/iwlwifi/mvm/mac80211.c @@ -1326,15 +1326,20 @@ static int iwl_mvm_post_channel_switch(struct ieee80211_hw *hw, goto out_unlock; } - iwl_mvm_sta_modify_disable_tx(mvm, mvmsta, false); + if (!fw_has_capa(&mvm->fw->ucode_capa, + IWL_UCODE_TLV_CAPA_CHANNEL_SWITCH_CMD)) + iwl_mvm_sta_modify_disable_tx(mvm, mvmsta, false); iwl_mvm_mac_ctxt_changed(mvm, vif, false, NULL); - ret = iwl_mvm_enable_beacon_filter(mvm, vif, 0); - if (ret) - goto out_unlock; + if (!fw_has_capa(&mvm->fw->ucode_capa, + IWL_UCODE_TLV_CAPA_CHANNEL_SWITCH_CMD)) { + ret = iwl_mvm_enable_beacon_filter(mvm, vif, 0); + if (ret) + goto out_unlock; - iwl_mvm_stop_session_protection(mvm, vif); + iwl_mvm_stop_session_protection(mvm, vif); + } } mvmvif->ps_disabled = false; @@ -4421,6 +4426,42 @@ static int iwl_mvm_schedule_client_csa(struct iwl_mvm *mvm, 0, sizeof(cmd), &cmd); } +static int iwl_mvm_old_pre_chan_sw_sta(struct iwl_mvm *mvm, + struct ieee80211_vif *vif, + struct ieee80211_channel_switch *chsw) +{ + struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif); + u32 apply_time; + + /* Schedule the time event to a bit before beacon 1, + * to make sure we're in the new channel when the + * GO/AP arrives. In case count <= 1 immediately schedule the + * TE (this might result with some packet loss or connection + * loss). + */ + if (chsw->count <= 1) + apply_time = 0; + else + apply_time = chsw->device_timestamp + + ((vif->bss_conf.beacon_int * (chsw->count - 1) - + IWL_MVM_CHANNEL_SWITCH_TIME_CLIENT) * 1024); + + if (chsw->block_tx) + iwl_mvm_csa_client_absent(mvm, vif); + + if (mvmvif->bf_data.bf_enabled) { + int ret = iwl_mvm_disable_beacon_filter(mvm, vif, 0); + + if (ret) + return ret; + } + + iwl_mvm_schedule_csa_period(mvm, vif, vif->bss_conf.beacon_int, + apply_time); + + return 0; +} + #define IWL_MAX_CSA_BLOCK_TX 1500 static int iwl_mvm_pre_channel_switch(struct ieee80211_hw *hw, struct ieee80211_vif *vif, @@ -4429,7 +4470,6 @@ static int iwl_mvm_pre_channel_switch(struct ieee80211_hw *hw, struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw); struct ieee80211_vif *csa_vif; struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif); - u32 apply_time; int ret; mutex_lock(&mvm->mutex); @@ -4473,21 +4513,7 @@ static int iwl_mvm_pre_channel_switch(struct ieee80211_hw *hw, break; case NL80211_IFTYPE_STATION: - /* Schedule the time event to a bit before beacon 1, - * to make sure we're in the new channel when the - * GO/AP arrives. In case count <= 1 immediately schedule the - * TE (this might result with some packet loss or connection - * loss). - */ - if (chsw->count <= 1) - apply_time = 0; - else - apply_time = chsw->device_timestamp + - ((vif->bss_conf.beacon_int * (chsw->count - 1) - - IWL_MVM_CHANNEL_SWITCH_TIME_CLIENT) * 1024); - if (chsw->block_tx) { - iwl_mvm_csa_client_absent(mvm, vif); /* * In case of undetermined / long time with immediate * quiet monitor status to gracefully disconnect @@ -4499,19 +4525,14 @@ static int iwl_mvm_pre_channel_switch(struct ieee80211_hw *hw, msecs_to_jiffies(IWL_MAX_CSA_BLOCK_TX)); } - if (mvmvif->bf_data.bf_enabled) { - ret = iwl_mvm_disable_beacon_filter(mvm, vif, 0); + if (!fw_has_capa(&mvm->fw->ucode_capa, + IWL_UCODE_TLV_CAPA_CHANNEL_SWITCH_CMD)) { + ret = iwl_mvm_old_pre_chan_sw_sta(mvm, vif, chsw); if (ret) goto out_unlock; - } - - if (fw_has_capa(&mvm->fw->ucode_capa, - IWL_UCODE_TLV_CAPA_CHANNEL_SWITCH_CMD)) + } else { iwl_mvm_schedule_client_csa(mvm, vif, chsw); - else - iwl_mvm_schedule_csa_period(mvm, vif, - vif->bss_conf.beacon_int, - apply_time); + } mvmvif->csa_count = chsw->count; mvmvif->csa_misbehave = false;